There certainly is a lot happening in this film. Trap doors. Secret passages. Staircases. A "Bat" man. A hysterical maid who screams and leaps and circles and points. She must have been totally worn out when this film ended. Having seen the later version, I kind of knew the ropes a little bit. The idea is to get people out of an old mansion in order to grab a bunch of money that was embezzled from a local bank. The title character harasses the inhabitants, but doesn't know he has a real foe in the tough, matronly, unflappable owner of the mansion. She holds her own no matter what transpires. We have lots of suspects and that bat costume is pretty good. We can see elements of the Batman character of the early comic books. For a silent film this is very high quality and wears very well.