Focus Features announced today that the latest installment of the 'Insidious' franchise, 'Insidious 3,' has officially commenced with production. However, while cast members Lin Shaye, Angus Sampson and Mr. Whannell are reprising their roles from the previous films, this next chapter is not a continuation -- it's a prequel!

In addition to the first photo from 'Insidious 3,' an official plot synopsis, though brief, was revealed, noting that the next horrific events precede what happened in the Patrick Wilson- and Rose Byrne-led films.

In 'Insidious: Chapter 3,' a twisted new tale of terror begins for a teenage girl and her family, predating the haunting of the Lambert family in the earlier movies and revealing more mysteries of the otherworldly realm The Further.

This time around, Dermot Mulroney ('August: Osage County') and Stefanie Scott (the recently cast Kimber in the upcoming 'Jem and the Holograms' movie) take the lead.

Furthermore (get it?!), as was the case with the previous films, Focus Features and Blumhouse Productions are offering fans a chance to visit the 'Insidious 3' set. To win a trip for two to the Los Angeles-based production, head on over to the 'Insidious' Facebook page and comment on the first-look image. Otherwise, go to the film's official Twitter page and retweet this update. The contest will last until Friday, July 25 (PSST! That's the end of this week). Click HERE for the official rules.

'Insidious 3' hits theaters on May 29, 2015.