by John Lucarotti
[Starring] Geoffrey Keen, Philip Latham
Guest stars Denis Carey, Meadows White

'Oil for an aeroplane faster than sound - and it can't pass a lock which has not changed since Napoleon the First!'
Albert Lefioch, veteran of Verdun, stages a one-man strike and brings the whole of France's canal system to a halt. Since the barge traffic includes a vital consignment of secret oil for Concorde, Mogul is deeply concerned.
Meanwhile, in England, another old man succeeds in stopping the Mogul refinery which produces the oil.
Izard and Stead decide to cope with the problems personally.