Cast (7)

Tom Baker

The Doctor

Mary Tamm

Romana

John Leeson

K-9 (voice)

Beatrix Lehmann

Professor Rumford

Susan Engel

Vivien Fay

Nicholas McArdle

De Vries

Elaine Ives-Cameron

Martha

Crew (10)

Graham Williams

Producer

David Fisher

Writer

Darrol Blake

Director

Dudley Simpson

Original Music Composer

Anthony Read

Script Editor

Perry Brahan

Special Effects Assistant

Elizabeth Parker

Special Sound Effects

Mat Irvine

Visual Effects Designer

Mitch Mitchell

Visual Effects

Delia Derbyshire

Theme Song Performance