Dial 9 for Murder - S2.E21

Sylvie is approached by her old friend Cory Ann Crawford who works at a telephone sex line. A colleague of hers was murdered after receiving phone calls from a man calling himself Steven, and now that Steven is calling her, she is afraid for her life. Because he looks "like hell in fishnet stockings", Nick sends Sylvie undercover at the telephone line, while he sets about finding Steven.