A young woman who witnesses a pawnshop robbery and murder is stabbed in the back and left for dead. Arriving at the crime scene, Detective Murdoch and Constable Crabtree are surprised to find her alive, although unable to move. Meanwhile, a prison inmate asks to see Inspector Brackenreid. When Brackenreid arrives at the jail, the man is found hanged in his cell but Brackenreid recognizes him as Reginald Pullen, an old army buddy and hero. Deciding to delve deeper into his friend's suspicious death, Brackenreid's enquiries are brought to a halt when another inmate, who was ready to talk, is also found dead in his cell.