After five years of hair-raising adventures – eyebrow hair to be exact – one of the most popular Doctors since Tom Baker is giving up the Tardis. Premiering January 2, Doctor Who: THE END OF TIME, PART ONE and Doctor Who: THE END OF TIME, PART TWO delivers more explosions than New Year’s fireworks. Exclusive to SPACE, the final chapter of David Tennant’s tenure as the Tenth Doctor unfolds in a Clash-of-the-Titans-esque two-part special with PART ONE airing at 8 p.m. ET, followed immediately by PART TWO at 9:20 p.m. ET.

SPACE is turbo-charging the Tardis with the DOCTOR WHO MARATHON at 4 p.m. ET, with re-airings of THE NEXT DOCTOR, PLANET THE DEAD and THE WATERS OF MARS.

On December 18, InnerSPACE dedicates their year-end episode to DOCTOR WHO. Starting at a special time of 10:15 p.m. ET, Ajay and Teddy conduct an in-depth analysis of the final four specials including a rare interview with lead writer and executive producer, Russell T Davies.

In DOCTOR WHO: THE END OF TIME, PART ONE the Doctor embarks on what he knows to be his final journey. There’s only one problem; his psychotic nemesis, the Master, has been reborn. With both determined to cheat death, the battle rages from the wastelands of London to the mysterious Immortality Gate. Meanwhile, the alien race Ood warn of an even greater danger, as a terrible shadow falls across the Universe.

In PART TWO the Master’s plans hurtle out of control. With the sound of drums growing louder, and an ancient trap closing around Earth, the Doctor and his companion must fight alone. But sacrifices must be made, and the deadly prophecy warns: ‘He will knock four times.’

David Tennant stars as the Tenth Doctor; guest stars include John Simm, Bernard Cribbins, Catherine Tate, Timothy Dalton, David Harewood and June Whitfield. DOCTOR WHO: THE END OF TIME, PART ONE and PART TWO is written by Russell T Davies and directed by Euros Lyn. Producer is Tracie Simpson.

DOCTOR WHO: END OF TIME marks Tennant’s and Davies’ final collaboration on the iconic series before they pass the baton to actor Matt Smith and executive producer Steven Moffat. Season 5 of DOCTOR WHO introduces the Eleventh Doctor and all-new adventures. It is planned for a spring premiere, exclusively on SPACE.

For addicted fans that need an on-demand DOCTOR WHO fix, SPACE prescribes a daily dose of http://www.spacecast.com for updates, links, trailers and sneak peeks. Re-examinations of all the specials are available for seven days post premiere. Those with theories, predictions, praise and gripes can join the DOCTOR WHO support group at http://www.spacecast.com/shows/watersofmars.aspx.