Despite the presence of Jack Warner as a senior policeman, the world of "Jigsaw" is a far cry from the cosy atmosphere of "Dixon of Dock Green". Effective camerawork makes Brighton a faintly sinister setting for this murder mystery. The standard of acting is generally high, (although I found Yolande Donlan's performance a little overwrought for my taste) and a strong script from Guest ensures that the detailed police investigation contains enough action (and unexpected revelations) to hold the viewer's interest to the very end.