S5·E12 The Last Kiss Goodnight

Holly goes to Chris and Rita for help after a detective, Ray Quiller, attempts to rape her. Even though the odds are against her, Holly files a complaint with Internal Affairs. After Quiller is murdered, Rita, who has been promoted to Chief of Detectives, must put Holly on administrative leave. After Chris obtains evidence incriminating a drug lord, Rita is kidnapped. The trade of the evidence for Rita ends tragically.