When famous author DC Parlov receives death threats, Jake and Terry take the case, so that Terry can meet his lifelong hero. Back at the precinct, Gina forces her way into the Boyle clan of cousins in an attempt to choose the location of the annual Boyle family vacation. Meanwhile, Holt's anger peaks when Amy chooses Kevin's side in their argument about a math puzzle.

Jake and Rosa go on a search mission after a stressed-out Amy disappears on the day of her sergeant's exam. Gina inherits a Boyle family heirloom.

Charles's convoluted bachelor party plans frustrate Jake, Terry and Holt. At her bachelorette bash, Amy plays a revealing game of "Never Have I Ever."

Jake and Terry accompany Charles to the funeral of his Great Uncle Pappy — and uncover a family secret. Rosa nudges Holt back into the dating pool.