When Did You Last See Your Father? Part 4 - S6.E24

The men who patrol their beats in the little Panda cars are not supposed to poach on the preserves of the C.I.D., but that's exactly what Alec May does. It's a case which involves an outbreak of safe-stealing from farms and a deaf and dumb little boy who likes to watch trains. May's own part in the affair looks like having serious consequences for his career.