Still frustrated by the unsolved Watson murder, Bayliss (Kyle Secor) and Pembleton (Andre Braugher) are in no mood to tackle the murder of a police dog -- but they must, since the Baltimore municipal code dictates that any police killing in the line of duty must be given first priority. Meanwhile, Howard (Melissa Leo) and Felton (Daniel Baldwin) go after a sadistic drug dealer who has ritualistically murdered his victim -- and in so doing, they find a link to a case being handled by Lewis (Clark Johnson). And on the domestic scene, Bolander (Ned Beatty) meets the teenage son (Stiv Paskoski) of his current amour Dr. Carol Blythe (Wendy Hughes); and Crosetti's (Jon Polito) wife is pregnant. ~ Hal Erickson, Rovi