Jamie and Lucy have an encounter with what appears to be a pair of ghost children. But these spooky kids, Sara and Georgie, aren’t actually ghosts. They’ve travelled forwards in time to seek help, believing they’re going to be murdered … Simon Callow, Mark Gatiss, Tamsin Greig, Tsion Habte, Jason Rennie, India Fowler, Xavier Wilkins Added on HBO 2023-01-06. Youtube Trailer