Finders Keepers is the thirteenth episode of the third season. It was released on 12 January 2007.
The search for a yacht ends up splitting Charlie's loyalties when two agencies ask for his help. Charlie for once considers how a situation might play out to his benefit.
"Finders keepers, losers weepers" is a common playground rhyme/taunt in English-speaking cultures. It is in many ways the childish equivalent of 'Possession is nine-tenths of the law'.