Crypt Of Horror And SciFi

I don't know the name, just some of the plot line.. It takes place in an old Boarding house, there is a young man peeping on some attractive female renters. His mother runs the boarding house and the final scene culminates in a really bizarre murder where one of the snooping female boarders finds her way into the young mans room and discovers a dead girl lying on a table that has been wrapped in clear plastic with a red substance (blood?) in clear plastic tubes being piped around her. He is performing some sort of ritualized sex/murder involving an eggthat he cracks over her plasticized body. The movie has the rich colors of a 1960's-1975 horror with a Euro look to it. I caught the ending to this movie years ago and was instantly enthralled but never caught the title and have been looking ever since. This movie has all the hallmarks of a Cult film. Sound familiar to anyone?