Lachlan Buchanan

As the BAU welcomes back Emily Prentiss, they're called upon to investigate the disappearance of three women.

Castle & Beckett get an up-close view of a Real Housewives-esque TV series, when they investigate the murder of the show's rising star.

Personal plans are interrupted when errors are found in what seemed to be a straight-forward, closed case; McGee and Delilah argue whether work should be discussed during dinner.

Andy becomes suspicious of the circumstances surrounding her mother's death; the crew works to evacuate a doctor from Pac-North hospital and find themselves in a life-threatening situation; Sullivan undergoes surgery for his chronic leg pain.

Vic rallies the crew to pose for a calendar photo shoot that will support a good cause; Emmett comes clean to Ben and Sullivan and shows Andy a softer side.

Andy and Jack fight to save people who are trapped in a collapsing bowling alley; Ben confronts Sullivan about his drug problem; Maya's mother pays her a visit.