Simon Gregor

Desiccated corpses and terror fill the canals as The Doctor takes Amy and Rory to 16th-century Venice.

Pullo and Vorenus receive rewards; Caesar decides to overhaul the Senate; Servilia hurdles the final obstacle in her revenge scenario.

The team are forced to enlist the help of a psychotic killer, who has been jailed for the abduction and murder of five women.

Boyd and the team continue to rely on the serial killer they've enlisted to help them on the case, while also trying to protect Dr Delaney.