FEAR IS THE KEY (1972, UK, 103m, 15) ***½ Action, Crime, Thriller dist. Anglo-EMI Film Distributors (UK), Paramount Pictures (USA); pr co. Anglo-EMI / KLK; d. Michael Tuchner; w. Robert Carrington (based on the novel by Alistair MacLean); pr. Jay Kanter, Alan Ladd Jr.; ph. Alex Thomson (Technicolor | 2.35:1); m. Roy Budd; ed. Ray…