Mark Beltzman

In the aftermath of the disastrous homecoming dance, the girls try to sort out the devastation that is left behind. Parents, boyfriends (secret ones, possible ones and current ones), siblings and friends are all in flux, and if the little liars don't act fast, the situation could go from bad to worse. To top it off, the girls are sitting on some killer information about Toby (recurring guest star Keegan Allen) that some people would die to get their hands on. Meanwhile, "A" isn't the only one sending Aria text messages, as tensions rise in the Montgomery household. Best-selling author Sara Shepard (Pretty Little Liars) makes a cameo appearance as a substitute teacher at Rosewood High School.

House and the team investigate a string of deaths centering around a single organ donor, then rush to save the only two surviving recipients; House auditions new best friends and uses a detective to spy on Wilson.

The team delves into a modern-day lonely-hearts club when a handsome man commits suicide after watching a tape of an unattractive woman whose 1989 murder remains unsolved.

Colleen and Matt miss their flight to Mexico; Greg and Jen share a cookie with a fellow passenger, who has a severe allergic reaction; Joan and John's dog swallows the wedding ring; the Hughes family is forced to move in with Tyler and Clementine.

Another couple upstages Greg and Jen's parental skills when they take Lark on her first airplane trip; Joan and John try to smuggle their dog onto the plane; Matt and Colleen miss their flights.