i don't think it is. i have seen house on haunted hill and i think it was too resent for my mom to have seen. the movie i want to know about might possibly be anywhere between 15-20 years old? she doesn't remember much.

i thought it was HOHH too, but the ending is different. and my mom would've remembered the occult bits and she didn'y mention any of it.

she's really specific on the being on the roof part and getting the money which doesn't help them as they have to go down again and possibly die.