A narcotics cop driven over the edge laces a batch of cocaine with cyanide and sets it loose on the streets.

The wife of a prison inmate is shot and killed in a laundromat in what looks like a professional hit. Stone and Keller determine that it was the work of a prison gang that is using outside enforcers to force inmates' wives to help them smuggle drugs into the prison. Another wife of a prisoner is now targeted to be made to do what the murdered woman would not.