Rip off of 'Torso' ****SPOILERS***

The end of this film massively steals from the end of Torso (1973, Sergio Martino).

Firstly, the heroine has a broken ankle - and is unaware that everyone else is dead / dying. In 'Torso' the lead played by Suzie Kendall goes to bed early with a twisted ankle while the others all party downstairs - the killer enters the house and then we are left to wonder what happens. On awaking the only survivor goes downstairs and discovers the gore ...and one friend who is almost still alive. The killer then goes onto saw up the bodies - while the lead has no choice but to watch in silence. She then finds herself locked in a room, and has to find to get the key (without the killer noticing).

Any of the above sound familliar?

RIP OFF!