An Internal Affairs investigation on fellow detective Bill Ehlers is done when he is suspected of stealing money recovered from a bank robbery. He refuses help from his fellow officers and sets out to find the robbers himself.

Sam and another cop are ambushed while transporting a witness, and the witness is kidnapped. While Sam is recovering in the hospital, Jim and Dan pursue the abductors who want their hostage, a reformed safecracker to assist them in a burglary.