Stamp and Slater attend to a break-in and apprehend a suspect with a suspiciously large sum of money, but the occupier denies all knowledge of the cash. Deakin suspects that the proceeds are from a betting shop robbery where the suspects got away with £24,000 in cash. With Stamp and Slater's suspect already in the frame, Deakin tries to work out whether he already had the money on him before he committed the burglary, or whether the occupier was keeping it same for him.