Peter Davison

The Doctor

Matthew Waterhouse

Adric

Sarah Sutton

Nyssa / Ann Talbot

Janet Fielding

Tegan Jovanka

Michael Cochrane

Lord Cranleigh

Barbara Murray

Lady Cranleigh

Gareth Milne

The Unknown / George Cranleigh

Moray Watson

Sir Robert Muir

Ivor Salter

Sergeant Markham

Andrew Tourell

Constable Cummings

Ahmed Khalil

Latoni

Brian Hawksley

Brewster

Timothy Block

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