kevin rebbie , 56 , of limerick township , pennsylvania , has been arrested .
he allegedly sexually abused a girl in her home and filmed her in bathroom .
the girl also claims rebbie watched her undress and when he thought she was sleeping .
investigators found 41 videos , 34 of which showed victims as they showered .
rebbie said that he purchased the camera specifically to watch the 15-year-old girl but captured other victims on film , too .
rebbie 's is being held on a $ 500,000 bail and will appear in court on may 1 .