Depressed by the unsavory aspects of her most recent murder case, Kay Howard (Melissa Leo) takes a leave of absence and returns to her home town -- only to be promptly swept up into the investigation of a local environmentalist's death. Making things uncomfortably personal is the fact that Kay's former lover Chick (John Dossett) and her own brother Chris (Gareth Williams) are among the suspects. Back in Baltimore, Pembleton (Andre Braugher) and Felton (Daniel Baldwin) reluctantly team up to solve the murder that sent Kay packing, and Munch's (Richard Belzer) obstinacy puts another crimp in his purchase of the after-hours bar. Harlee McBride, real-life wife of series regular Richard Belzer, appears as Dr. Alyssa Dyer. ~ Hal Erickson, Rovi