S1·E17 Play Belles' Toll

Mike runs into an old acquaintance, the wife of an embezzler he helped send to prison, who asks for her help. When she turns up dead in her apartment, rather than in his office as scheduled, Mike investigates. He's curious why a blue-blooded lady should arrange to bury the wife of a convict and discovers that both women are involved in a shady escort service dabbling in blackmail.