Ego (S11E17)

When the dead body of Karen Hall, an investigator with the State Attorney General's Office Criminal Division, is found in the Hudson River, Detectives Briscoe (Jerry Orbach) and Green (Jesse L. Martin) find that her boss, Alec Conroy (Nestor Serrano), had written off her disappearance as a random kidnapping from an Albany train station. But as more is learned about Conroy's controlling relationships – with the dead woman, with his wife and with a long-term girlfriend – he quickly becomes a suspect. (iTunes)