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S1 E6: Diamonds Are a Man's Best Friend

It's pay day at Grace Brothers and the staff realize that their money just doesn't go very far. An opportunity for a bonus arises when a customer loses a diamond and offers a £100 reward. Greed gets the better of everyone, except Mr. Grainger, and soon they're conspiring behind each others backs. Mr. Mash throws a wrench in the search after he damages a jeweled dress, causing a multitude of "diamonds" within the department.