A woman claims that Brian Cassidy raped her while he was working under cover; when Cassidy and his lawyer utilize surprising defense methods, Detective Amaro is affected.

When a suspect is gravely injured and the case becomes a public spectacle, Amaro's badge is on the line; Cragen surprises everyone with an announcement.

Olivia Benson is investigated by Internal Affairs after William Lewis' death; as pressure mounts, Olivia has to choose between her convictions and her badge.

An investigation hits a nerve with Benson when a suspect claims his genetics causes him to commit rape.