Thomas Stewart "Tom" Baker (born 20 January 1934) is a British actor and comedian. He is best known for playing the fourth incarnation of the Doctor in the science fiction television series, Doctor Who, a role he played from 1974–1981.
As the Doctor's time beings to end, he must unravel a mysterious plot by the Master. However, his past comes back to haunt him as Ian and Jo try to reach their own versions of the Doctor.
