A century has passed since the notorious Whitechapel murders when a copycat killer appeared in Los Angeles. Following five similar killings, investigators are (seemingly) convinced that the murderer took their own life; otherwise, they remain at large. Given that "Jack’s Back” (1988) centers on the return of Jack the Ripper, I anticipated a gruesome and gritty slasher film comparable to "Edge of Sanity" (1989). In…