Malcolm and Reese spend the day fighting at a water park; Francis gets into a different kind of pool match with Spangler; and Dewey stays home with an odd babysitter.
The serial killer resurfaces after 20 years of silence and contacts the Behavioral Analysis Unit with the promise that he will kill another victim in the next five days. As the team springs into action, Gideon enlists the help of a former colleague who worked the case when it was fresh to help find the killer.
Cooper returns to the online dating game with surprising results; Addison goes on a date with one of Violet's patients; Naomi and Sam make a house call at a convent.
Russell (David Spade) takes the title of worst boss ever after Timmy (Adhir Kalyan) exchanges horror stories with other assistants while on an overnight errand for his boss. Meanwhile, Audrey (Megyn Price) and Jeff (Patrick Warburton) take advice from Jennifer (Bianca Kajlich) and Adam (Oliver Hudson) on how to switch things up in the bedroom.
This episode features the following cases: E-Mail; Cup of Joe; Secret of the Family Tomb; Wheezer; The Unknown Patient.
