The drums beat four times as we reach the finale of Series 3. The Master remains center stage just as Martha Jones returns from a year's journey. What vital mission did the Doctor give Martha? Things are about to change. We review 'The Last of the Time Lords' Doctor Who Series 3 Episode 13. Welcome to episode 149 of Discussing Who. Hosted by Kyle Jones, Clarence Brown, Lee Shackleford, and Nicole Mazza.