Get the "Mystery Key"that is used to lock the master bedroom door from the left end of the mantle above the fireplace in the party room where Stephanie is dancing. Keep in mind that this is not the only way to complete her story, you can actually use Rachel's story to complete it too but that will be covered in another guide. This guide will only tell you how to use the phone jammer way to complete her story. Stephanie's Story Walkthrough. Go back to Frank and give him the camera.
House Party - Katherine's Story Walkthrough
Use Rachel's story to get her alone in a room.
House Party – Version 0.16.2
Tell her that Frank has a crush on her. This is just so that Katherine will like you more. Ask him if he is going to guard the drinks all night.