Unspeakable: Beyond the Wall of Sleep (2024)

Renowned oneirologist, Ambrose London, is requested to Arkham Asylum by newly appointed, Dr. Barnard to study the strange case of James Fhelleps. A patient seemingly inhabited by the personality of Joe Slater, a denizen of the Catskill Mountain region; a primitive colonial peasant of barbaric degeneracy, who had mysteriously vanished 122 years ago. Ambrose and Barnard's investigation takes an unexpected turn when Fhelleps/Slater is attached to London's "Dream Machine" which releases an alien life form hell bent on world annihilation.