Doctor Who Castrovalva: Part Four (Season 19, Episode 4)
TV-PG
TV Episode | 24 min | Adventure, Drama, Family

Primary photo for Castrovalva: Part Four

Doctor Who

Castrovalva: Part Four (Season 19, Episode 4)

TV-PG

TV Episode | 24 min | Adventure, Drama, Family

The Portreeve of Castrovalva is revealed to be the Master in disguise who, as the Doctor discovers, created Castrovalva himself to trap his newly regenerated arch-enemy.

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Cast	+ Add Cast
11 cast members

Name	Known for
Peter Davison The Doctor The Doctor See fewer	Doctor Who (1963)
Janet Fielding Tegan Tegan See fewer	Doctor Who (1963)
Sarah Sutton Nyssa Nyssa See fewer	Doctor Who (1963)
Matthew Waterhouse Adric Adric See fewer	Doctor Who (1963)
Anthony Ainley The Master / Portreeve The Master / Portreeve See fewer	Doctor Who (1963)
Derek Waring Shardovan Shardovan See fewer	The Escape of R.D.7 (1961)
Michael Sheard Mergrave Mergrave See fewer	Star Wars: Episode V - The Empire Strikes Back (1980)
Frank Wylie Ruther Ruther See fewer	Macbeth (1971)
David Bulbeck Castrovalvan Man (uncredited) Castrovalvan Man (uncredited) See fewer	Little Shop of Horrors (1986)
Jean Channon Extra (uncredited) Extra (uncredited) See fewer	Biography (1970)
Sheila Vivian Castrovalvan Woman (uncredited) Castrovalvan Woman (uncredited) See fewer	The Old Men at the Zoo (1983)