Summary
Highlights
Mabel and Dipper discover a secret room behind the wallpaper in the Mystery Shack, revealing a collection of forgotten wax figures, including a wax version of Grunkle Stan.
The wax version of Grunkle Stan is found decapitated, leading the kids to take on the role of detectives to solve the case of the missing wax head.
Dipper and Mabel attempt to find the culprit by interrogating local suspects, including Manly Dan, while navigating the town's strange dynamics.
The detectives realize the perpetrator isn't a person, but the living, cursed wax figures themselves, seeking revenge on Stan for abandoning them.
The kids battle the wax figures using heat and the afternoon sun to melt them, successfully solving the mystery and proving their detective skills.