New York City, 1957. Lionel Essrog, a private detective living with Tourette syndrome, tries to solve the murder of his mentor and best friend, armed only with vague clues and the strength of his obsessive mind.

In the criminal justice system, sexually-based offenses are considered especially heinous. In New York City, the dedicated detectives who investigate these vicious felonies are members of an elite squad known as the Special Victims Unit. These are their stories.