S1·E21 Skel in a Cell

An arrested drug dealer dies in a cell in the station house. The coroner determines that he died from strangulation, which puts Doyle in a jam as he was the arresting officer and was supposed to have kept an eye on his prisoner.

Clem is approached outside a supermarket by a man who has a plan to scam the business' owners. A sting is set up to arrest the man but things do not go according to plan.