Arthur Darvill in this short film. billy believes his friends and family have been replaced por doubles. his psychiatrist believes this is a delusion. meanwhile, billy's carrying out an experiment to prove it's no delusion.
Dessicated corpses, terror in the canal and a visit to the sinister House of Calvierri the Doctor takes Amy and Rory for a romantic mini-break. But 17th-century Venice is not as it should be... COPYRIGHT (C) BBC.
