Ben the tramp's uncanny knack of running into trouble is unsurpassed in the final crime thriller written for him by J. Jefferson Farjeon. On a grey afternoon he was destined never to forget, Ben sat down on a park seat and proceeded to think, not of cabbages and kings, but of numbers, lucky and unlucky. But it wasn't Ben's lucky day, or that of the nondescript-looking stranger sitting at the other end of the bench - murdered before his very...