The detectives investigate the murder of Wharton Carlyle, found stabbed to death in a yacht marina. They interview the victim's teenaged daughter, Lilly Carlyle, a frequent nightclub goer with drug and alcohol addiction. During the investigation, Goren and Eames' suspicions turn to a nightclub owner who has close connections with organized crime. When the detectives look deeper into the case, they think that the relation between the girl and the club proprietor aroused the victim's fears, and was the cause of the murder. All is not what it seems, however, because the main suspect, John Hampton, is an undercover FBI agent posing as a thug to infiltrate a drugs ring. He could be the main culprit, but the detectives and the FBI clash over the conflict of interests.