About this series
Trust no one, fight for everything.
Kalili Keoka thought she'd left the world of cosmic battles and celestial betrayals far behind. But when an unholy alliance of angels and demons erupts onto the scene, old friends Dakota Chase and McKenna Cross are dragged back into the chaos alongside Kalili and her partner Faith—a former angel who's no stranger to the treacherous games of the immortal realm.
Dakota and McKenna, seasoned thieves with a knack for survival, quickly realize that the stakes have never been higher. Valaferion, a ruthless Duke of Hell, and his allies—an archangel, an archdemon, and a deadly principality—are bent on shifting the balance of power forever, and Kalili's at the center of their plan. As the four friends plunge into battles against impossible odds, they'll need every skill, every weapon, and every bond of loyalty to survive the onslaught. From gritty city streets to the fiery depths of Hell, their journey is one of relentless action, dangerous secrets, and unwavering friendships.
But as the final showdown looms, Kalili knows that courage may not be enough to save them—and the price of victory could be far greater than any of them are prepared to pay. Embers of Eternity is a high-stakes, heart-pounding journey where loyalty and love are the ultimate weapons in a world on the edge of ruin.
Titles in the series (9)
- The Cassidy Chronicles - The Spark Before the Fire: The Cassidy Chronicles, #1
1
Her wedding ended in gunfire. Now she's running for her life—and fighting for a future worth building. Aiyana Cassidy wanted one perfect day. She had the partner of her dreams. A quiet ceremony. A life of science, invention, and possibility ahead of her. But when the minister pulled a gun, everything changed. Now she and her wife Kendra are on the run across a divided America—a patchwork of independent nations and power-hungry factions where freedom is relative and safety is a luxury. They don't know who wants them dead, or why. All they know is that it started at the altar, and it hasn't stopped since. Kendra Cassidy is nobody's damsel. Raised in shadows and trained for survival, she knows how to disappear, fight back, and dig up answers people would kill to keep buried. Cass is brilliant. Kendra is dangerous. Together, they're impossible to stop. As they crisscross territories from the Northern Imperium to the California Confederacy, Cass and Kendra uncover pieces of a plan bigger than either of them—a plot that threatens to tip an already fragile world into chaos. To stop it, they'll have to rely on old contacts, new friends, and the kind of bond that's forged under fire and tested by every choice. This isn't just about survival. It's about justice. It's about truth. And it's about proving that two people who refuse to back down can be enough to change everything. Smart, fast-paced, and full of heart, Cassidy Chronicles Volume One kicks off a genre-blending saga that mixes political intrigue, breakneck action, and found-family loyalty with sharp dialogue and characters who refuse to be anything less than extraordinary. For fans of Firefly, The Expanse, and clever women with their fingers on the trigger and their hearts on the line.
- The Eternity Protocol: Descent: The Cassidy Chronicles, #7
7
Two admirals. One crew. One impossible mission to save the future from the past. Fleet Admiral Kendra Cassidy once rewrote the rules of war, peace, and civilization itself. With her wife, Aiyana, she fought the Artemis War. Built the Terran Federation. Proved that humanity could rise above its worst instincts. But now? She's back in uniform. Back in the fight. And the future she built is on the edge of collapse. A new temporal anomaly has emerged—one that shouldn't exist, one tied to Kendra herself. It's a cascade event that threatens to destabilize everything the Federation holds dear. So Kendra, her wives, and the crew of the Dreamer are pulled in—dragged into a black-ops mission of historical sabotage, high-stakes diplomacy, and brutal tradecraft. They'll cross borders that shouldn't exist. Break rules that aren't supposed to bend. And meet beings who have watched the rise and fall of civilizations with folded arms. But time travel never plays fair. And every move they make changes the board. From tense Federation briefings to desperate deals with crewmembers with extraordinary abilities, from ancient quantum archives to a deadly infiltration of a rogue lab, Kendra fights to do what's right. But in the shadows of the past, ethics become luxuries. And when push comes to shove, the mission demands blood. She orders the impossible. She crosses lines she swore never to touch. And somewhere along the way, she forgets where the line is between survival and surrender. Descent is the explosive first half of The Eternity Protocol duology—an emotionally charged, time-twisting sci-fi epic about what happens when the hero you need has already been broken by the job.
- Terran Federation Technical Manual: The Cassidy Chronicles, #10
10
Return to the Cassidyverse with the Terran Federation Technical Manual — 2026 Edition, a fully revised, richly illuminated guide to humanity's interstellar future. Spanning approximately 220 pages, this updated volume expands the archives with new schematics, deeper historical context, and newly declassified material straight from the Terran Federation's earliest centuries. Explore the Federation as its citizens knew it: Founding & Geopolitics – Track Earth's fragmentation, reunification, and the tumultuous rise of the Federation in the aftermath of the Great Schism. Worlds & Colonies – From Luna's thriving Artemis Colony to the far-flung settlements of Titan and beyond, discover how humanity took root across the system. Fleet Architecture – Examine detailed technical profiles, including new blueprint plates of vessels like the Nemesis-class and Enterprise-line starships. Cultures & Societies – Immerse yourself in the people, customs, and artistic legacies that shaped life across Federation space. Technology & Innovation – Unpack warp mechanics, CeeSea fabrication, Alpha-class AIs, weapons platforms, and other breakthroughs that defined an age of exploration. Species of Note – Meet the Freyan treecats, Tantorians, and the Xyrlax Compiled "from the holdings of the Terran Federation Archives," this manual balances historical insight with technical detail, offering a compelling blend of worldbuilding, lore, and in-universe documentation. Whether you're charting starship capabilities, investigating political upheavals, or tracing the Federation's cultural evolution, this is your essential companion to the Cassidyverse. For readers, creators, historians, and explorers alike—prepare to dive into the expanding future of humanity.
- The Eternity Protocol: Rebirth: The Cassidy Chronicles, #8
8
The Eternity Protocol: Rebirth Book Two of The Eternity Protocol Duology When you've burned the timeline to save it, what's left to rebuild? Fleet Admiral Kendra Cassidy thought she understood sacrifice. She's commanded fleets, rewritten history, and made choices that haunt her every time she closes her eyes. But some wounds cut deeper than duty—and some victories leave scars that don't heal. Now, in the quiet aftermath of the impossible, Kendra and her crew aboard the Archer must face the fallout of what they've done. The mission that was supposed to end time's unraveling has instead fractured everything she believed in. Worlds have shifted. Alliances have changed. And the future they fought to preserve no longer looks like the one they remember. Haunted by the ghosts of the past and confronted with the consequences of her own command, Kendra is forced to redefine what leadership means when every decision carries the weight of galaxies. With Cass and Minerva by her side—and a new generation watching—she must rediscover the balance between strength and compassion, between command and connection. But the universe isn't done with them. New challenges are emerging from the edges of known space, and old friends are returning in unexpected forms. The Archer's mission has changed, but its purpose endures: to explore, to protect, and to prove that even in the darkest timeline, humanity can choose to rise again. Rebirth is the sweeping, emotional conclusion to The Eternity Protocol duology—a story of love, legacy, and the courage to rebuild after everything falls apart. It's about the cost of survival, the strength found in trust, and the belief that even in a universe scarred by time itself, there's always room to begin again. Because saving the future was never the end of the story. It was only the start of finding their way home. Perfect for fans of: The Expanse • Battlestar Galactica • Star Trek: Picard • Mass Effect • Ancillary Justice Themes: resilience after trauma, leadership and love, found family, forgiveness, identity, and the enduring spark of hope.
- Shades of Rose: Becoming: The Cassidy Chronicles, #11
11
Some loves never die. Some burn you down first. Kendra Foster-Briggs is eighteen, brilliant, and reckless as hell. Running from her small-town past, she dives headfirst into the bright lights and shadows of the California Confederacy, determined to build a future on her own terms—even if it means making her name in sensies, the immersive adult entertainment of the 22nd century. But the industry doesn't play fair. Neither does debt. When her dream of independence crumbles, Kendra signs a too-good-to-be-true contract with OutLook, a shadowy organization with secrets buried deeper than her own. She thought she was buying time. Instead, she sold them her future. Thrust into a brutal training program alongside other misfits and debtors, Kendra discovers she's not the only one being shaped into something useful. Or dangerous. One of them—sharp-eyed, soft-voiced, and stubborn as hell—might just matter more than all the rest. If she survives what's coming. Shades of Rose: Becoming is the raw, gripping first half of a duology about power, identity, and the kind of connection that leaves scars—and sometimes, salvation. Told in Kendra's razor-edged voice, it's the story of who she was before the galaxy knew her name, and the love that lit the fuse. Perfect for fans of Red Rising, Jade City, and stories where sharp tongues hide soft hearts—and where love isn't always tidy, or tame, or easy to define.
- Shades of Rose: Breaking: The Cassidy Chronicles, #12
12
Some loves are a lifeline. Some become your last defense. Kendra Foster-Briggs and Rose Emmons are married, contracted, and crawling back into the jaws of OutLook—the covert agency that thinks it owns them. But Kendra doesn't do ownership. Not anymore. With debts cleared and signatures inked, the newlyweds return to training... and surveillance, and secrets, and rooms bugged six ways from Sunday. Every move is tracked. Every breath is noted. And Kendra is done pretending she doesn't notice. So they play the game. For now. But building a life inside the system means finding cracks in the foundation—and widening them. With allies like a cheerful assassin, a pair of oversized tigers, and each other, Kendra and Rose start carving out something real. Dangerous. The kind of freedom OutLook doesn't authorize. And when the past refuses to stay buried, and the truth behind Rose's disappearance finally claws its way to the surface, Kendra faces a choice: follow orders, or become the kind of woman who lights the match. Shades of Rose: Breaking is the explosive conclusion to a duology about power, survival, and the kind of love that turns scars into vows. For readers who crave stories with teeth, heat, and heroines who never ask for permission. Perfect for fans of Jade City, The Power, and futures built by people who refuse to stay broken.
- The Girl in the Scope: The Cassidy Chronicles, #12
12
She was trained to kill. Not to care. But caring might be the only way she survives. Marie Fontaine is one of the best assassins OutLook ever produced—precise, untraceable, unflinching. Until now. Her new mission should be routine: eliminate a list of whistleblowers threatening the status quo. No names. No questions. No complications. But then she finds a face she knows. A cause she once believed in. And a woman she thought she'd lost. Now Marie has a choice to make. Burn the evidence, complete the job—and bury the last flicker of her conscience. Or break the rules, protect the truth, and become the next name on someone else's kill list. In a world where loyalty is a liability and love is the deadliest vulnerability of all, Marie Fontaine is about to find out what happens… when the scope turns back on you. ? If you like: Burn notice-style rogue agents Slow-burn reconnections Found family in the crossfire Women who don't ask permission And assassins with just enough heart to ruin everything... This is your next mission.
- Quantum Quirks: A Science Fiction Childhood: The Cassidy Chronicles
? WINNER – 2025 Imadjinn Award for Best Middle Grade Novel Some friendships are so powerful, they bend space, time, and the rules of childhood itself. Kendra Cassidy has spent centuries shaping the future—but there's one story she's never told. Until now. Quantum Quirks is her sideways autobiography, a warm and sharply funny look back at the chaotic brilliance of her first friendship with Aiyana, the kid with the toolbox, the blueprint obsession, and an unshakable belief that anything is possible with duct tape and a good plan. Together, in the Northern Imperium of the 2080s, they build impossible machines, dodge sparkly government agents, and figure out the strange mechanics of being small people in a big, broken world. Perfect for middle grade readers and up, this is a story about friendship, found family, and the kind of wild summer where everything changes—even if you're only seven. Full of STEM-fueled mischief, emotional honesty, and future-forward heart, Quantum Quirks is for readers who grew up on A Wrinkle in Time, The Mysterious Benedict Society, and Green Glass House—and for parents looking for stories that respect kids' smarts and their hearts.
- Embers of Eternity: The Cassidy Chronicles
Trust no one, fight for everything. Kalili Keoka thought she'd left the world of cosmic battles and celestial betrayals far behind. But when an unholy alliance of angels and demons erupts onto the scene, old friends Dakota Chase and McKenna Cross are dragged back into the chaos alongside Kalili and her partner Faith—a former angel who's no stranger to the treacherous games of the immortal realm. Dakota and McKenna, seasoned thieves with a knack for survival, quickly realize that the stakes have never been higher. Valaferion, a ruthless Duke of Hell, and his allies—an archangel, an archdemon, and a deadly principality—are bent on shifting the balance of power forever, and Kalili's at the center of their plan. As the four friends plunge into battles against impossible odds, they'll need every skill, every weapon, and every bond of loyalty to survive the onslaught. From gritty city streets to the fiery depths of Hell, their journey is one of relentless action, dangerous secrets, and unwavering friendships. But as the final showdown looms, Kalili knows that courage may not be enough to save them—and the price of victory could be far greater than any of them are prepared to pay. Embers of Eternity is a high-stakes, heart-pounding journey where loyalty and love are the ultimate weapons in a world on the edge of ruin.
Adam Gaffen
If you want strong FMCs who don't wait to be rescued, wit, and stories that will keep you up until 2am, then you're in the right place! What doesn't Adam Gaffen write? Well, hold on. He might be on it now. So far his Cassidyverse contains Science Fiction, Fantasy, Thriller, and Rom-Com, with Dark Romance on the horizon. He's a member of the Science Fiction Writers of America, and the Heinlein Society. He and his wife are owned by a pack of dogs and cats.
Read more from Adam Gaffen
The Cassidy Chronicles (The Cassidy Chronicles Book 1) Rating: 3 out of 5 stars3/5The Kildaran Rating: 0 out of 5 stars0 ratingsTriumph's Ashes (The Artemis War Volume 4) (Cassidy Chronicles Book 5) Rating: 1 out of 5 stars1/5The Artemis Wars Omnibus Rating: 0 out of 5 stars0 ratingsThe Road to the Stars: The Artemis Wars Volume 1 (The Cassidy Chronicles Book 2) Rating: 1 out of 5 stars1/5The Cassidy Chronicles Volume One Rating: 3 out of 5 stars3/5Be Worth the Echo: A Human Guide to Meaning, Maintenance, and the Machinery of the Divine Rating: 0 out of 5 stars0 ratingsA Quiet Revolution: The Artemis War Volume 3 (The Cassidy Chronicles Book 4) Rating: 0 out of 5 stars0 ratingsWhispers in the Fog: Two Unpublished Holmes Mysteries Rating: 0 out of 5 stars0 ratingsThe American Dumpster Fire Almanac Volume One: A Field Guide to the Flaming Trash Heap Formerly Known as Democracy Rating: 0 out of 5 stars0 ratingsGodsfall: The Book of One Rating: 0 out of 5 stars0 ratingsThe Vault & The Vixen Rating: 0 out of 5 stars0 ratingsThe Measure of Humanity: The Artemis War Volume 2 (The Cassidy Chronicles Book 3) Rating: 1 out of 5 stars1/5Triumph's Ashes Rating: 1 out of 5 stars1/5The Shape of the Fire Rating: 0 out of 5 stars0 ratingsRefuge Rating: 0 out of 5 stars0 ratings
Related to The Cassidy Chronicles
Related ebooks
Charlotte's Pride: Sacred Order, #1 Rating: 3 out of 5 stars3/5The Demon of Scotland Rating: 0 out of 5 stars0 ratingsProphecy Rising: Snakeheart, #1 Rating: 0 out of 5 stars0 ratingsDragonsbane Rating: 0 out of 5 stars0 ratingsValkyries Rating: 0 out of 5 stars0 ratingsForever: The Queen's Alpha Series, #5 Rating: 5 out of 5 stars5/5Hero Wanted Rating: 4 out of 5 stars4/5Blood Oath Rating: 0 out of 5 stars0 ratingsDevil's Assassin: A Collective World Novel: Lucifer's War, #2 Rating: 0 out of 5 stars0 ratingsMidnight's Fate: The Cynn Cruors Bloodline Series, #4 Rating: 0 out of 5 stars0 ratingsOsephetin's Chosen: War of the Lich, #3 Rating: 0 out of 5 stars0 ratingsPrince of Shadows: A Beth-Hill Novel: The Shadows Trilogy, #1 Rating: 0 out of 5 stars0 ratingsBound by Fate's Forge Rating: 0 out of 5 stars0 ratingsDeath's Denial: Seasons of Necromancy, #4 Rating: 5 out of 5 stars5/5Heir of Mjölnir (The Dragon Hunters #4): The Dragon Hunters, #4 Rating: 0 out of 5 stars0 ratingsOf Love and War: a Reverse Harem Paranormal Romance: Pandemonium College Knights, #4 Rating: 0 out of 5 stars0 ratingsDemons (A Runes Companion Novel) Rating: 4 out of 5 stars4/5
Science Fiction For You
I Who Have Never Known Men Rating: 4 out of 5 stars4/5The Handmaid's Tale Rating: 4 out of 5 stars4/5The Midnight Library: A GMA Book Club Pick: A Novel Rating: 4 out of 5 stars4/5The Martian: A Novel Rating: 4 out of 5 stars4/5The Institute: A Novel Rating: 4 out of 5 stars4/5Project Hail Mary: A Novel Rating: 4 out of 5 stars4/5Red Rising Rating: 4 out of 5 stars4/5Wool: Book One of the Silo Series Rating: 4 out of 5 stars4/5The Ocean at the End of the Lane: A Novel Rating: 4 out of 5 stars4/5The Ministry of Time: A Novel Rating: 4 out of 5 stars4/5The Testaments: A Novel Rating: 4 out of 5 stars4/5Dune Rating: 4 out of 5 stars4/5Kindred: A Graphic Novel Adaptation Rating: 4 out of 5 stars4/5Jurassic Park: A Novel Rating: 4 out of 5 stars4/5Brave New World Rating: 4 out of 5 stars4/5This Is How You Lose the Time War Rating: 4 out of 5 stars4/5Ready Player One Rating: 4 out of 5 stars4/5Kindred Rating: 4 out of 5 stars4/5Flowers for Algernon: Student Edition Rating: 4 out of 5 stars4/5Golden Son Rating: 4 out of 5 stars4/5Annihilation: A Novel Rating: 4 out of 5 stars4/5Shift: Book Two of the Silo Series Rating: 4 out of 5 stars4/5Snow Crash: A Novel Rating: 4 out of 5 stars4/5The Stand Rating: 4 out of 5 stars4/5Recursion: A Novel Rating: 4 out of 5 stars4/5Station Eleven: A Novel (National Book Award Finalist) Rating: 4 out of 5 stars4/5Ready Player Two: A Novel Rating: 3 out of 5 stars3/5The Ones Who Walk Away from Omelas: A Story Rating: 5 out of 5 stars5/5Hyperion Rating: 4 out of 5 stars4/5Dark Matter: A Novel Rating: 4 out of 5 stars4/5
Reviews for The Cassidy Chronicles
1 rating0 reviews
