Doctor Who (Original Series) First Doctor 4 Series 30 Serials 136 Episodes Rated: PG
The first incarnation of the Doctor was portrayed by William Hartnell. During Hartnell's tenure, the episodes were a mixture of stories set on Earth of the future with extraterrestrial influence, on alien planets, and in historical events without extraterrestrial influence, such as Marco Polo, one of the lost serials. In his last story, The Tenth Planet, the Doctor gradually grew weaker to the point of collapsing at the end of the fourth episode, leading to his regeneration.

Planet of the Giants
1	Planet of the Giants (Part 1)
2	Dangerous Journey (Part 2)
3	Crisis (Part 3)
The Dalek Invasion of Earth
4	World's End (Part 1)
5	The Daleks (Part 2)
6	Day of Reckoning (Part 3)
7	The End of Tomorrow (Part 4)
8	The Waking Ally (Part 5)
9	Flashpoint (Part 6)
The Rescue
10	The Powerful Enemy (Part 1)
11	Desperate Measures (Part 2)
The Romans
12	The Slave Traders (Part 1)
13	All Roads Lead to Rome (Part 2)
14	Conspiracy (Part 3)
15	Inferno (Part 4)
The Web Planet
16	The Web Planet (Part 1)
17	The Zarbi (Part 2)
18	Escaoe to Danger (Part 3)
19	Crater of Needles (Part 4)
20	Invasion (Part 5)
21	The Centre (Part 6)
The Crusade
22	The Lion (Part 1)
23	The Knight of Jaffa (Part 2) Reconstruction
24	The Wheel of Fortune (Part 3)
25	The War Lords (Part 4) Reconstruction
The Space Museum
26	The Space Museum (Part 1)
27	The Dimensions of Time (Part 2)
28	The Search (Part 3)
29	The Final Phase (Part 4)
The Chase
30	The Executioners (Part 1)
31	The Death of Time (Part 2)
32	Flight Through Eternity (Part 3)
33	Journey Into Terror (Part 4)
34	The Death of Doctor Who (Part 5)
35	The Planet of Decision (Part 6)
The Time Meddler
36	The Watcher (Part 1)
37	The Meddling Monk (Part 2)
38	A Battle of Wits (Part 3)
39	Checkmate (Part 4)