Season 2 of Based on a True Story is reuniting Kaley Cuoco and Chris Messina — as new parents — with Tom Bateman.

Peacock released the official trailer on Thursday, October 24, which picks up with Ava (Cuoco) and Nathan (Messina) navigating life with a baby. They are thrown for a loop, however, when Ava’s sister Tory (Liana Liberato) turns up engaged to Matt (Bateman).

“You cannot marry a murderer,” Ava tells Tory, who fires back, “Matt is actively taking steps to change.”

Ava sets off on a mission to prove that Matt is still up to his serial killer ways. That is where Drew (Melissa Fumero) comes in, who becomes Ava’s friend but is also a detective looking into a new series of murders. While Matt claims it isn’t him, Ava isn’t sure whether he is telling the truth.