Doug Simpson

As the BAU investigates targeted killings in Tampa, they also deal with their own feelings about the loss of Prentiss.

Derek, Meredith, Arizona and Cristina receive news about the plane crash lawsuit; Richard avoids Catherine's advances; Jackson takes on one of Mark Sloane's former patients.

Dre schools Andre Jr. in the art of "Playing The Dozens," trash talking someone into submission, after he's intimidated by a bully at school, but he succeeds a little too well with his plan; Bow struggles with sleep deprivation when Diane develops a fear of the dark.

On the season finale, Castle and Beckett's long-awaited wedding is almost here, but when a shocking surprise threatens to ruin the big day, they are sent on a wild mission filled with masked men, angry bikers and a charming ne'er-do-well from Beckett's past.

After forgetting to call ahead at a fancy restaurant, Jeff (Patrick Warburton) hopes that dressing Audrey (Megyn Price) as a well-known celebrity will get them a reservation. Timmy (Adhir Kalyan) doesn't understand the humor of "The Three Stooges" when Adam (Oliver Hudson) excitedly invites him over for a movie night. Russell (David Spade) joins Liz (Wendi McLendon-Covey) at a sex addicts meeting, only to aggressively flirt with the women.