Orbiting a quiet backwater planet, the massed forces of the universe's deadliest species gather, drawn to a mysterious message that echoes out to the stars. And amongst them, the Doctor. Rescuing Clara from a family Christmas dinner, the Time Lord and his best friend must learn what this enigmatic signal means for his own fate and that of the universe.

Cast:Matt Smith, Jenna Coleman, Peter Capaldi, Karen Gillan, Orla Brady, Kayvan Novak,

Genre:Drama, Science Fiction, TV Movie,

country:United Kingdom,

Production:BBC Cymru Wales,