There are several films based on the premise of a mad genius using a wax museum as a tool to murder people.
House of Wax is a 1953 horror film that is a remake of 1933’s Mystery of the Wax Museum. House of Wax was released in 3-D and is now available on 3-D Blu-ray disc. Mystery of the Wax Museum was filmed in two-color Technicolor. An outstanding Blu-ray of the restored film was released in 2020.
Wax Mask is a 1997 Italian horror film that is also set in a wax museum. It’s worth seeing but a lot gorier than the earlier films. It’s also on Blu-ray.
I haven’t seen 1973’s Terror in the Wax Museum.
Sad! 