Following up this morning's Doctor Who story , BBC America has announced that it will air Doctor Who: The Waters of Mars on Saturday, December 19th at 9 pm ET/PT. The news comes on the heels of BBC One's announcement that they will debut the David Tennant special, the first of three final Doctor Who installments featuring the Tenth Doctor, on Sunday, November 15th at 7 pm GMT, a full month ahead of the US transmission. Doctor Who: The Waters of Mars , written by Russell T. Davies and Phil Ford, will star David Tennant as the Tenth Doctor and Rome's Lindsay Duncan as Adelaide. The plot finds the Doctor arriving on Mars at the Bowie Base One where not everything is as it seems as the base falls under attack from a deadly water-based threat. ("Mars, 2059. Bowie Base one. Last recorded message: don't drink the water. Don't even touch it. Not one drop.") US airdates for the final two David Tennant Doctor Who specials will be made public in early December.