Matt Smith The Doctor Actor Karen Gillan Amy Pond Actor Arthur Darvill Rory Williams Actor Alex Kingston River Song Actor Mark A. Sheppard Canton Everett Delaware III Actor William Morgan Sheppard Canton Delaware Actor Stuart Milligan Richard Nixon Guest Star Chukwudi Iwuji Carl Guest Star Mark Griffin Phil Guest Star Sydney Wade Little Girl Guest Star Nancy Baldwin Joy Guest Star Adam Napier Captain Simmons Guest Star Marnix Van Den Broeke The Silent Guest Star Steven Moffat Writer, Executive Producer Toby Haynes Director