| "Invasion" | |
|---|---|
| Series Doctor Who Season 2, Episode 20 | |
| File:Doctor Who 2.20 001.jpg | |
| Air date | March 13th, 1965 |
| Writers | Anthony Coburn |
| Director | Waris Hussein |
| Producers | Verity Lambert; Mervyn Pinfield |
| Starring | William Hartnell; William Russell; Jacqueline Hill; Carole Ann Ford |
| Episode guide | |
| Previous "Crater of Needles" |
Next "The Centre" |
"Invasion" is the twentieth episode of series two of the British science fiction television series Doctor Who. It was directed by Waris Hussein and written by Anthony Coburn. It first aired on BBC-1 in the UK on March 13th, 1965.
In this episode, the Doctor, Ian, Susan and Barbara are trapped inside the Cave of Skulls. The Doctor seems disinterested in their current predicament however. The tribal elder goes to the cave to prevent the Doctor from teaching the others the secret of fire. Za and Hur are forced to work together to stop the Doctor and his companions from escaping.