Flesh and Stone
Following from the end of "Flesh and Stone" where his companion Amy Pond (Karen Gillan) had kissed him, the alien time traveller the Eleventh Doctor (Matt Smith) picks up Amy's fiancé Rory (Arthur Darvill) and takes the two on a romantic trip to Venice in 1580. There they are intrigued by a girls' school whose students appear to be vampires and discover that they are really alien refugees in disguise, who plot to make Venice their new home.