Diffrent Hitchcock movie.
You should be warned that "Frenzy" has one of the most gruesome rape/murder scenes ever filmed - beautifully filmed, of course, so that you don't look away, but that makes it all the more terrible. It's followed by one of Hitchcock's great signature shots, as the camera draws back, out of the building, into the crowded and noisy streets, where the scene of the crime becomes just one room among many. That's "Frenzy" for you. It's one of Hitchcock's most assured and gripping films; but it's pretty grim. Everyone in London looks surprisingly ugly. Their characters, from hero to villain, are a trifle uglier too. But don't expect a happy ending. Things go just a little bit past the point where a happy ending is possible.