Series: 6
Original Air date: May 7, 2011
Number Doctor: 11th
Companion(s): Amy Pond and Rory Williams
Writer(s): Stephen Thompson
Director(s): Jeremy Webb
Guest Stars:
Hugh Bonneville as Henry Avery
Oscar Lloyd as Toby Avery
Michael Begley as Mulligan
Tony Lucken as De Florres
Carl McCrystal as McGrath
Lily Cole as The Siren
Synopsis: On board a 17th century pirate ship sailing the ocean waves, a crew under the command of one Captain Avery are being picked off one by one by a ghostly apparition. They believe it to be a legendary Siren, a beautiful and mesmerizing demon who lures men to their death with its haunting Siren song. She marks her prey before retrieving them with a black spot on their hand, a mark that means certain death. As they are becalmed and stuck in the ocean, all seems lost for the dwindling pirate crew… until three stowaways are discovered with a mysterious blue crate.