Ryan Christiansen

Jess gets a job as a zombie at a haunted house, but is more frightened of her changing feelings towards Sam (guest star David Walton). Schmidt and Cece are (unfortunately) perfectly matched in the costumes they’re wearing, while Winston and Shelby (guest star Kali Hawk) are worlds apart in theirs. Nick gets a visit from a former college crush (guest star Maria Thayer) who shows her affection in a scary way.

Susan calls off a wedding; Gaby moves forward with a wedding; a Wisteria Lane resident is suspected of murder.

The BAU travels to Los Angeles to investigate unusual murders throughout the city. Also, more of Prentiss' mysterious past comes to light.

When the killer of Horatio's wife busts out of prison and goes on a rampage, the CSIs must determine what he's after and find him before he strikes again.

In the season finale, John copes with the aftermath of his kidnapping, while Sammy closes in on the real robbers and the pressure builds on Ben. Meanwhile, Lydia continues to pursue John's kidnappers and becomes more intimate with Russell (special guest star TOM EVERETT SCOTT).