Peter Davison

The Doctor

Matthew Waterhouse

Adric

Sarah Sutton

Nyssa

Janet Fielding

Tegan Jovanka

Anthony Ainley

The Master / The Portreeve

Dallas Cavell

Head of Security

Frank Wylie

Ruther

Derek Waring

Shardovan

Michael Sheard

Mergrave

Souska John

Child

Tom Baker

The Doctor (archive footage)

Adrian Gibbs

The Watcher (archive footage)