Not really prime Pete Walker; rather an attempt by the director to do a stalker / slasher picture, after the Italian giallo fashion.
Walker does treat us to some surprising and vivid scenes, ample shock moments and a fine use of locations - mid-70s Britain is once again a fascinatingly grim locale, as in some many films of the era! However, the crucial 'twist' is rather poor, straining all credibility that the film had.
The uncannily ubiquitous Jack Watson is actually quite sinister though, and Stephanie Beacham once more plays the very middle-class friend type as in other British horrors of the era. Lynne Frederick - to be wed to Peter Sellers the following year - is another of PW's sexy heroine-in-peril leads and, like many such characters, is not incapable or entirely cardboard. John Leyton, singer of the stupendously eerie Joe Meek-produced #1 hit 'Johnny Remember Me' (1961), is bizarrely cast as Frederick's husband, providing as much screen presence as the elusive Zeppo Marx. Sheila Keith is missing.
While this is a definite retreat from PW's previous nasty fairy tales - "House of Whipcord", - it still has a certain appeal for those who don't mind a bit of well-crafted 1970s exploitation. Those who view films purely in terms of gender politics should obviously stay well clear!
