Now whatever you might say about Kirk Douglas you could never ever call him mousey.So playing against type doesn't work.
Nothing happens for 40 minutes then he murders a complete stranger.Presumably to show us that he is going crazy.He then kills a private eye who is trailing him.The film then starts to ramp up the suspense with Douglas stalking Seberg in her own house,only for the film to give us a total letdown in the climax.
A really poor film overall