The boss of Paranormal Productions is Morty, a ghostly film director. He'll challenge you to a series of 'takes' on different movie sets. You'll need to use the environment to defeat him. For example, on the horror set, use the camera flash to stun him. On the city set, use the miniature buildings to hide and ambush him. Each 'take' requires a different approach, so pay attention to the environment and use your Poltergust creatively to defeat him.
