Lost Homicidal Maniac (Answers to "Shirley")

In the fourth installment of the popular horror/comedy series, Andrew Mayhem starts a private investigation business with his best friend, Roger, as a way to escape his impending domesticated life with triplets. When an intriguing client claims to be a possible serial killer, Andrew dives into the case, only to find himself entangled in a much darker threat, as a vengeful villain from his past surfaces. Combining humor with suspense, this adventure takes Andrew into even more dangerous territory.