The Doctor - Peter Davison
The Doctor - Tom Baker (recap cameo)
Adric - Matthew Waterhouse
Nyssa - Sarah Sutton
Tegan - Janet Fielding
The Master -
Anthony Ainley
Shardovan - Derek Waring
Mergrave - Michael Sheard
Ruther - Frank Wylie
The Portreeve - Neil Toynay
Head of Security - Dallas Cavell
Child - Souska John
Assistant Floor
Manager - Renny Tasker
Costumes - Odile Dicks-Mireaux
Designer - Janet Budden
Film Cameraman - John Baker
Film Editors - Mike Houghton, Robin
Jackman
Incidental Music - Paddy Kingsland
Make-Up - Marion Richards
Production Assistant - Olivia Cripps
Production Manager - Margot Hayhoe
Production Associate - Angela Smith
Script Editor - Eric Saward
Special Sounds - Dick Mills
Studio Lighting - Ron Bristow
Studio Sound - Laurie Taylor
Theme Arrangement - Peter Howell
Title Music - Ron Grainer
Visual Effects - Simon McDonald
Writer - Christopher H. Bidmead
Producer - John Nathan-Turner
Director - Fiona Cumming

The Doctor's latest
regeneration has proven more unstable than his previous ones.
His two assistants, Tegan and Nyssa, help him recuperate on the
tranquil planet of Castrovalva.
Adric has been captured by the Master, who is taking advantage
of the Doctor's weakened state to ensnare him in an elaborate
trap whose recursive nature threatens to destroy his mind.
As the Doctor begins to recover he realises that the Master's
trap for Adric is even more intricate than he could have
imagined and that he will stop at nothing to gain his revenge
over the Doctor.

Working
Title(s):
The Visitor
Things to look out for:
Peter Davison's hair is light brown at the end
of Logopolis, when he first appears as
the newly regenerated Doctor, but has changed to near platinum
blond as he is helped through the field to the TARDIS at the
start of Castrovalva.
Archive:
All 4 episodes exist.
Bloopers:
Director Fiona Cumming cast
different actors for the security guards chasing the companions
at the start of episode one than Peter Grimwade
had used at the end of Logopolis.
In the Zero Room sequence, the image is
horizontally flipped. This has the effect of making The Doctor's
collar question marks appear reversed. The error was gleefully
pointed out by Peter Davison in the DVD
commentary.
In Part 1, The Doctor leaves behind items of clothing including
the fourth Doctor's scarf and a shoe, despite the fact he was
wearing wellington boots when he regenerated.

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Castrovalva
Manufactured by: BBC DVD / 2|Entertain
(cat.#1331C)
Format: DVD -
Region 2 & 4 - PAL UK Episodic
RRP: £40.84
Rating: U
Released:
29th January 2007
Notes:
Released as part of the
New Beginnings
box-set, together with The
Keeper of Traken &
Logopolis.
Special Features:
■
Commentary from actors Peter Davison
and Janet Fielding, plus director Fiona Cumming and writer
Christopher H. Bidmead.
■
Being Doctor Who - Peter Davison discusses his casting and
time as the Fifth Doctor.
■
Directing Castrovalva - Fiona Cumming talks about directing
Peter Davison's debut story.
■
The Crowded TARDIS - by the end of Tom Baker's tenure, the
TARDIS crew had grown from the usual one companion to three.
This featurette examines the reasons behind this change of
direction. Featuring actors Tom Baker, Peter Davison and Sarah
Sutton, director John Black and script editor Christopher H.
Bidmead. Narrated by George Williams.
■
Blue Peter - Peter Davison - Peter Davison interviewed on the
popular children's magazine show.
■
Swap Shop - Peter Davison - Noel Edmonds interviews Peter
Davison, with questions phoned in from young viewers.
■
Deleted Scenes- two deleted scenes from the story.
■
Theme Music Video - a brand new remix of Peter Howell's
version of the theme music for the series, exclusively remixed
from the original multitrack master. Option to listen to the
music in either stereo (default) or Dolby Digital 5.1 surround
versions.
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Castrovalva
Manufactured by: Target
Format:
Paperback Book
Written by:
Christopher H. Bidmead
Published:
1983
Notes:
No.76 in the Target Doctor Who Library.
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Warriors of the Deep
Manufactured by: Target
Format:
Paperback Book
Written by:
Christopher H. Bidmead
Published:
1991
Notes:
No.76 in the Target Doctor Who Library.
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