The Fatal Mistake - S4.E10

Set in England, a respectable accountant and family man every month on the dot, he is visited by his ""friend"", who graciously bestows gifts upon his wife and children, then retires with his host into the den. Here he collects his monthly blackmail check--just as he does with all his other ""clients"". Tired of paying out extortion, he plans a neat little mishap for him.