Halfway out of the Dark
Quote

“Amy and Rory are trapped on a crashing space liner, and the only way the Doctor can rescue them is to save the soul of a lonely old miser, Kazran Sardick. But is Sardick, the richest man in Sardicktown, beyond redemption? And what is lurking in the fogs of Christmas Eve?” (“A Christmas Carol,” Doctor Who (IMDB | Amazon)