Watch Medusa Full Movie Free Online 123Movies. Demi is excited to be getting new head shots. When she arrives at the photographer's studio, things are not as expected. As a naive and optimistic person, she decides to go on with the session anyway. Ultimately her trust is betrayed and she is forced to realize that the world is not such a safe place after all. It's this loss of innocence that triggers an awakening of her deepest internal power which gives her the strength to survive and triumph over pure evil.