(1 episode)

Brother Rhys (1 episode)

Pritchard

Dr. Griffiths

Dillon (1 episode)

(1 episode)

Henry Gutch

Mr. Pritchard (1 episode)

(5 episodes)

Elias (6 episodes)

Taff - Geraint Jenkins (1 episode)

Samuel Evans (5 episodes)

Dr. Philpott

Mayor

Rev Eli Jenkins

Hopkins (2 episodes)

(2 episodes)

(1 episode)

Prout (1 episode)

Research Scientist

Bernard Colley (1 episode)

Shippard

(1 episode)

Professor Witney (1 episode)

Professor Parry (3 episodes)

Prof. Weal

(2 episodes)

Mr. Custance

Prison Governor

Radcliffe

Det. Sgt. Steve Grady (1 episode)

Captain Cat (1 episode)

Russell (1 episode)

(2 episodes)

(2 episodes)

Seasick Card Passenger (uncredited)

Prison Gatekeeper