Recovering from his regeneration, the Doctor is taken to hospital where his alien physiology is a puzzle. Meanwhile, the Nestene consciousness intend to conquer Earth using Autons.[1]
| No of Episodes[2] | First Broadcast[2] | Writer(s)[2] | Script Editor(s)[2] |
|---|---|---|---|
| Four | January 3 -24, 1970 | Robert Holmes | Terrance Dicks |
| Director(s)[2] | Producer(s)[2] | ||
|---|---|---|---|
| Derek Martinus | Derrick Sherwin |
| Episodes[3] | |||
|---|---|---|---|
Episode One, broadcast January 3, 1970 | Episode Two, broadcast January 10, 1970 | Episode Three, broadcast January 17, 1970 | Episode Four, broadcast January 24, 1970 |
Notable Cast[2] | |||
|---|---|---|---|
![]() Doctor Who -Jon Pertwee | ![]() Liz Shaw - Caroline John | ![]() Brigadier Lethbridge-Stewart - Nicholas Courtney | |
| Guest Cast Members[2] | ||||
|---|---|---|---|---|
| ||||