Dee Kevin

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.

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.

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.