The film stars Florence Pugh, Ben Lloyd-Hughes, Scott Chambers, Georgina Bevan, James Cosmo, and Celia Imrie.

[1] In 1986 Scotland, Angela and Jackson are American siblings who, with a small team of paranormal investigators, run a fake medium scam on clients who believe their houses are haunted.

Angela is too disturbed and shaken from their last assignment so she turns down the request; she looks into the history of the caller's house and discovers that the owner’s foster children were all found dead with their mouths sewn shut 15 years prior, and her son, Herman, was blamed.

Jackson, needing the money to pay off the loan sharks, agrees to the job, despite reluctance from his sister, whom he cons into joining, despite Angela's worries she is going insane.

It becomes apparent that Jackson has been seeing things himself (previously using drugs and headphones to block it out), and finally decides to abandon the job after Mrs. Greene implies that she was involved in the girls' murders.

However, Jackson continues to fight back and make noise, causing Mrs. Greene to restrain him further; she cuts out his tongue, breaks his jaw with a hammer and chisel, and then sews his mouth shut.

[2] Brian Tallerico of RogerEbert.com wrote "It's not going to be anyone's favorite new horror film this holiday season, but it's a solid enough start to the month when temperatures drop and it becomes cooler to tell ghost stories".