Patti D'Arbanville guest stars as Darlene Everett, who shows up at the squad room with a videotape that "proves" that her husband, a bestselling author of espionage thrillers, was killed by his agent. Trouble is, there's no corpse -- and for the moment at least, it looks like there was no crime. In another case, an old woman is found dead after a break-in at her home -- but was she murdered? And on the romantic scene, Munch (Richard Belzer) pursues waitress Bille Lou (Ellen McElduff), while Falsone (Jon Seda) pursues fellow detective Ballard (Callie Thorne). Austin Pendleton makes his first appearance as eccentric Baltimore coroner Dr. Griscom. ~ Hal Erickson, Rovi