Strangling Women Videos What Is The Name Of The Black Comedy (from 60s Or 70s) Where A Strangler Dresses Up As Different Characters?

What is the name of the black comedy (from 60s or 70s) where a strangler dresses up as different characters? - strangling women videos

It was a great man who strangles women with scarves and pursued by a detective. It is a black comedy disguised as a butterfly in which the different characters. In the 60s and 70s. I can name!