Here's The Tease For The 'Insidious: Chapter 3' Teaser! Yes, it's everyone's favorite new trend. A tease of a teaser!Nonetheless, fans of the Insidious series can now enjoy this sneak peak of the third film.  A prequel set before the haunting of the Lambert family that reveals how gifted psychic Elise Rainier reluctantly agrees to use her ability to contact the dead in order to help a teenage girl who has been targeted by a dangerous supernatural entity.Series director James Wan is taking a backseat for this next one, allowing his friend and frequent collaborator Leigh Whannell (Saw) to helm the movie.