Libby Baker

Noticing that everyone is too busy on their electronic devices to actually interact with one another, Claire and Phil declare a family challenge to see who can stay unplugged the longest. Meanwhile, it's a race against the clock as Mitchell and Cameron frantically try to get Lily into the best pre-schools, and Jay and Manny are concerned about how far Gloria will go to alleviate their problem with the neighbor's barking dog.

The team tracks a serial killer when remains of numerous victims are found in the walls of an elderly couple's home; the hunt becomes urgent after the BAU learns the killer's specific ritual of when to strike; Rossi reconnects with his ex-wife.

Reagan (Christina Applegate) tries to keep it together when her "perfect" birth plan falls apart, while Chris (Will Arnett) wrestles with the decision to leave his law firm. Elsewhere, Ava (Maya Rudolph) must overcome the fears that are keeping her away from her best friend at such an important time. Nick Cannon and Jennifer Hall also star.