Internal Affairs is the second TV-movie based on the works of detective novelist William Bayer. Richard Crenna, who first played NYPD detective Richard Janek in 1985's Doubletake, is back, now as a functionary of Internal Affairs. He has been assigned to solve the murder of a woman who may have been the victim of a kinky serial killer who'd flourished in Saigon 12 years earlier. Meanwhile, Janek's ex-boss (Lee Richardson), now a jailbird, gives the Janek the tip that several cops may be illegally selling guns. Internal Affairs was originally telecast in two parts in November of 1988.