Dee Kevin

Rigsby and Van Pelt go undercover, posing as a couple with relationship problems in order to investigate the death of a woman who received advice from a radio love doctor.

Meredith, rattled by the latest events, tries to figure out what to do about Derek. Meanwhile, Owen is shocked when his mother is admitted to the hospital.

A software glitch causes Cameron to forget who she is, and she goes missing; Catherine Weaver meets with Agent Ellison to discuss his future at Zeira Corp; Ellison digs into Weaver's past.

Dan, Chris and Deborah's plan to cash in on the fixed 1919 World Series game hits a snag when they encounter a notorious gangster.