Midsomer Murders S03E01 - Death of a Stranger

When a tramp is found murdered in the woods near the village of Marshwood, Superintendent Ronald Pringle quickly arrests a local poacher for the crime and retires in a blaze of glory. However, Barnaby suspects an innocent man has been arrested, and when a second body is found under suspicious circumstances, it starts to look like Superintendent Pringle has rushed to judgement.