'Doctor Who' Stops Clock
A BBC spokesperson declined comment on Tennant's status for the fifth season. The show's fourth season is in production now and is scheduled to premiere in the
Tennant is reportedly in line to play Hamlet for Britain's Royal
If Tennant were to exit the series after that, it would follow a long "Doctor Who" tradition of periodically casting a new actor in the lead role. Tennant is the second Doctor in the new incarnation of the show, following Christopher Eccleston, and the 10th person to play him over the series' long history.