Help with an episode...
I might be getting my cop shows mixed up, but I think it was a 'Frost' episode. It involved the boyfriend of Denton cop, who claimed to be a Met. cop, staying in Denton to recuperate from an injuy. He kept trying to help Frost on a case. They found out later that the guy was never cop at all, just a frustrated ex-army redcap, that got rejected by the police.
Like I said, it may not have been 'Frost' at all.
Thanks.