Far in the future, on a tough, brutal planet, a devastated mining colony has only one survivor. To discover the truth, the Doctor and Belinda must face absolute terror.

Cast: Ncuti Gatwa, Varada Sethu, Anita Dobson, Rose Ayling-Ellis, Christopher Chung, Caoilfhionn Dunne, Bethany Antonia, Annabel Brook, Luke Rhodri, Gaz Choudhry, Gary Pillai, Frankie Lipman