Hell Bent The Doctor has finally come home to Gallifrey after billions of years trapped in a confession dial. With Rassilon and his High Council deposed, the Doctor is hell bent on saving Clara - but what of the legendary Hybrid? The Husbands of River Song It's Christmas Day on the planet Mendorax Dellora, and the Doctor is asked to make a house call. He's surprised to find River Song behind the request, and even more surprised when she asks him to save the life of King Hydroflax - her husband!