It was back in 2013 that sibling duo Andy Muschietti and Barbara Muschietti arrived on the horror scene with the Guillermo del Toro-produced Mama, which of course paved the way for the Muschiettis to revive Stephen King’s iconic IT property with two big screen movies and a prequel television series that is wrapping up its first season this Sunday night on HBO Max.

But while a sequel to Mama was announced the very same year the movie was released, the property never did end up launching a franchise. Dennis Widmyer...