Wayne Nickel

Robin tries to hide her secret past, and the guys discuss opposing viewpoints on getting to know women: while Ted prefers to know everything up front, Barney wants to know as little as possible.

The BAU team searches for a serial killer who is preying on married couples. Also, Hotchner looks to one of the team to fill JJ's vacant role.

Christine and Richard meet up with some old college buddies and are shocked to see how much their friends have aged.

Veronica is hired to find out who slipped a classmate a drug causing her to have a miscarriage against her will, but is distracted by Logan who admits to sleeping with Madison Sinclair. Meanwhile, Keith helps Mindy O'Dell when her ex-husband breaks into their house.