Above-average horror, positively crammed with Gothic themes and put together with some care, with Freddie Francis' camera recapturing that crystal-sharp quality which he understandably abandoned for Tales from the Crypt. The sheer multiplication of ideas sometimes becomes contrived, but Cushing is right back on form as a Wilhelm Reich-like scientist who is convinced that he has detected 'the principle of evil' under the microscope. This intrinsically fascinating theme (which implies a liaison between the rational and the mystical) is never properly developed, but does give rise to good moments, especially when Cushing injects the 'evil' into his prim little daughter (Heilbron) and she is transformed into a wildly sensual image of female libido.
Cast and crew
Peter Spenceley, Jonathan Rumbold
Christopher Lee Peter Cushing Lorna Heilbron George Benson Kenneth J Warren Duncan Lamont