70s Horror Movie - Man Kills to get Vision of the Bride

by Kimmy
(Pembroke New Hampshire)

What is the name of the movie where a man (wearing a suit and ascot) kills women so he can get a vision of the killing of a bride. Each kill gets him closer to the identity of the bride. He burns the women he kills in his incinerator which stinks up the neighborhood.

At the end of the movie, he discovers that the bride is his mother that he kills as a small child. Once he comes to the realization that he is the murderer of the bride, he forgets and the cycle of killing begins again.