Stephen King’s new novel, “Holly,” is his sixth book to feature the private investigator Holly Gibney, who made her debut as a mousy side character in the 2014 novel “Mr. Mercedes” and has become more complicated and interesting with each subsequent appearance. King appears on the podcast this week to tell the host Gilbert Cruz about Holly’s hold on his imagination and the ways she overlaps with parts of his own personality. Along the way, he also tells a dad joke, remembers his friend Peter Straub, and discusses his views on writing and life.Also on this episode, Cruz talks with Joumana Khatib about some of the month’s most anticipated new titles. Here are the books discussed in this week’s September preview:“The Fraud,” by Zadie Smith“Elon Musk,” by Walter Isaacson“The Iliad,” by Homer. Translated by Emily Wilson“Glossy: Ambition, Beauty, and the Inside Story of Emily Weiss’s Glossier,” by Marisa Meltzer“Land of Milk and Honey,” by C. Pam Zhang“American Gun: The True Story of the AR-15,” by Cameron McWhirter and Zusha Elinson