THE BLOOD ON SATAN’S CLAW (1971, UK, 97m, 18) ***½ Horror dist. Tigon Pictures (UK), Cannon Releasing Corp. (USA); pr co. Tigon British Film Productions / Chilton Films; d. Piers Haggard; w. Robert Wynne-Simmons, Piers Haggard; pr. Peter L. Andrews, Malcolm Heyworth; ph. Dick Bush (Eastmancolor | 1.85:1); m. Marc Wilkinson; ed. Richard Best; ad….