Thriller Opening Idea 2

My 2nd idea is inspired by Phone Booth and Psycho, we begin with somebody getting ready for the shower, they turn it on and as soon as they turn it on the phone rings, (suspenseful music starts playing), just as the person who is about to speak, all that can be heard is a demented laugh and the line cuts off, the music at this point will be building up loads of tension. When the person puts the phone down he turns around to see a masked figure holding the knife that is used in Psycho and unleashes hell on the person who is about to get in the shower. Once all the stabbing has been done, all that can be heard is the phone ringing once again, this time a message is left once again in the form of a demented laugh.