Two routine car accidents raise little suspicion, but then a third appears to be attempted murder. When a fourth occurs it is time to involve Inspector Roger 'Handsome' West of Scotland Yard, its most diligent and down to earth detective. A ruthless killer is on the loose, but why use this method and what do the victims have in common? Mrs. Bray, for instance, had just been crossing the road quite randomly, holding her child's hand as she realised she was going to die.