John Ruby

When a bomb kills five people at a protest rally, Beckett and Castle try to solve the case by reconstructing the 47 seconds prior to the explosion.

A massage mishap breaks the ice with a sexy, eligible client, leaving Riley (Jennifer Love Hewitt) to wonder if she's ready to start dating. Meanwhile, Linette's (Cybill Shepherd) relationship with Garrett (Brian Kerwin) seems headed for the long haul until damaging secrets from Garrett's past force Riley to intervene.

Raylan turns to an old friend for help after Ava makes a drastic decision.

Brad (Damon Wayans, Jr.) and Dave (Zachary Knighton) become entangled in a friendship with Brad’s crazy mailman Drew (guest star Rob Riggle), while Alex (Elisha Cuthbert) struggles to design a dress for Jane (Eliza Coupe). Meanwhile, Penny (Casey Wilson) competes with Max (Adam Pally) for the affections of his niece and nephew.

Jules starts to question her relationship with Grayson; Travis' girlfriend throws Bobby off his golf game.

When the CSI team works two separate investigations, one involving a woman found murdered in Mexico and another of a local couple found dead in their driveway, they find the evidence in one case may help the other.