ด็อกเตอร์ฮู: ภัยคุกคามใต้น้ำ

Patrick Troughton

The Doctor

Anneke Wills

Polly

Michael Craze

Ben Jackson

Frazer Hines

Jamie McCrimmon

Joseph Fürst

Zaroff

Colin Jeavons

Damon

Noel Johnson

King Thous

Tom Watson

Ramo

Peter Stephens

Lolem

Gerald Taylor

Damon's Assistant

Catherine Howe

Ara

P.G. Stephens

Sean

Paul Anil

Jacko

Roma Woodnutt

Nola

Graham Ashley

Overseer

Tony Handy

Zaroff's Guard