Doctor Who (Original Series) Fourth Doctor 7 Series 42 Serials 178 Episodes Rated: PG
The Fourth Doctor was portrayed by Tom Baker. He is, to date, the actor who has played the Doctor on television for the longest period of time, having held the role for seven seasons.

Horror of Fang Rock
	1	Horror of Fang Rock (Part 1)
	2	Horror of Fang Rock (Part 2)
	3	Horror of Fang Rock (Part 3)
	4	Horror of Fang Rock (Part 4)
The Invisible Enemy
	5	The Invisible Enemy (Part 1)
	6	The Invisible Enemy (Part 2)
	7	The Invisible Enemy (Part 3)
	8	The Invisible Enemy (Part 4)
Image of the Fendahl
	9	Image of the Fendahl (Part 1)
	10	Image of the Fendahl (Part 2)
	11	Image of the Fendahl (Part 3)
	12	Image of the Fendahl (Part 4)
The Sunmakers
	13	The Sunmakers (Part 1)
	14	The Sunmakers (Part 2)
	15	The Sunmakers (Part 3)
	16	The Sunmakers (Part 4)
Underworld
	17	Underworld (Part 1)
	18	Underworld (Part 2)
	19	Underworld (Part 3)
	20	Underworld (Part 4)
The Invasion of Time
	21	The Invasion of Time (Part 1)
	22	The Invasion of Time (Part 2)
	23	The Invasion of Time (Part 3)
	24	The Invasion of Time (Part 4)
	25	The Invasion of Time (Part 5)
	26	The Invasion of Time (Part 6)