The film is adapted from the novel Around the House by Josh Malerman, who also wrote Bird Box. Universal Pictures have released the first trailer for the upcoming horror film Other Mommy. Academy award winner Jessica Chastain is set to star as Bela's mother and as "Other Mommy", her evil doppelgänger. AdvertisementOther Mommy will be produced by James Wan and Blumhouse Atomic Monster, the studio behind Backrooms and Obsession. Watch the trailer for Other Mommy: