Who will Survive?

SYNOPSIS:

Jennifer is planning a romantic evening with a love interest, Jack. At random a psychotic couple chooses Jennifer's house as a place to unleash their version of fun. On a random decision, John, a longtime admirer of Jennifer, decides that same night to finally tell her his true feelings. When he arrives at Jennifer's and sees what has happened, John goes out of his mind with rage! Three bodies at the scene? Is this really a clear cut case of self-defense or is anything about this evening really Random?