Imagine enlisting in the army before you even turn 18. You do two tours in Iraq and Afghanistan, come back home to Boston and pursue a career in law enforcement. Then one night when you’re out with friends, words are exchanged with another group. A brawl ensues. And the unthinkable happens. On episode 117, Jac, Alexis and Billy investigate the murder of Stephen Perez. And if you stick around for Killing Time, you will finally learn what Alexis and Billy were up to on Long Island.