Proceed with Caution

Twenty-seventh in the long-running mystery series with Dr Launcelot Priestley. > Superintendent Hanslet of Scotland Yard is called upon to investigate a consignment of valuable jewels that have gone missing while being transported from Hatton Garden. Meanwhile Inspector Waghorn is given the case of a corpse that was found in a tar burner in a Kent village, completely unrecognisable. It takes the genius of Dr. Priestley to demonstrate how these two events are linked.