The poster says it all: the great literary detective versus the notorious serial killer of women in this Sixties fantasy chiller set in Victorian London. Adapted by Derek Ford and Donald Ford from their story which takes Sir Arthur Conan Doyle’s characters played here by John Neville and Donald Houston, with John Fraser as the aristocratic lunatic terrorising the East End. Produced by those exploitation experts Tony Tenser and Michael Klinger, this could easily have slid into the realms of the lurid but thanks to the great handling by director James Hill, costumes by Motley, delicate cinematography by Desmond Dickinson and an elegant score by John Scott it skirts the edges of taste to produce a gripping, entertaining thriller. The theory presented here is perfectly viable but one that might be scotched by more recent findings (even director Bruce Robinson has spent a decade on this trail). Still, it’s always been fun to speculate about this most horrifying of murderers. The cast is fantastic and just look down the ensemble: Barbara Windsor, Anthony Quayle, Robert Morley, Adrienne Corri, Judi Dench, Cecil Parker, Kay Walsh, and my beloved Frank Finlay! You had me at hello!