English horror film from the 60’s? 70’s

So this was a horror movie I saw as a kid. English, maybe a Hammer film but not any of the big Hammer actors. The premise was something to do with the upstairs tenant, a murderer, who could be identified by the way he would steeple his fingers and then tap the finger tips together. He somehow is killed I think, but possesses another person, that we see doing the same thing with their hands at the end. Thanks in advance

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