The movie operates as a thriller, though it doesn't play with guessing the perpetrator; the identity of the killer becomes clear fairly quickly. However, this isn’t due to poor writing—it’s intentional. The suspense arises not from identifying who committed the crime, but rather whether they will evade justice and what fate awaits the protagonist. The story is carefully constructed, and surprisingly, it's rooted in actual events. [see Jack The Stripper - https://en.wikipedia.org/wiki/Hammersmith_nude_murders] There are strong performances from capable actors who portray believable characters, notably Barry Foster and Billie Whitelaw. The atmosphere of London in the early 1970s is effectively captured, and the settings contribute to a pleasing overall impression. It’s not comparable to Hitchcock's best work, but it remains an enjoyable film that should provide entertainment.

Source on TMDB