S2·E9 – In the Dark
1971-02-15 • 50 min
The death of a young man off the Scottish coast leads to the Doomwatch team investigating a cover up in the case of a sunken ship, and the discovery of a revolutionary life-changing science.
Cast
John Paul
Dr Spencer Quist

Simon Oates
Dr. John Ridge
Joby Blanshard
Colin Bradley
Vivien Sherrard
Barbara Mason

John Nolan
Geoff Hardcastle

Jean Trend
Dr. Fay Chantry
Joseph Greig
Dr. Jackson

Patrick Troughton
Lyon McArthur / Alan McArthur

Alethea Charlton
Flora Seton
Simon Lack
Andrew Seton
Jane Dore
Receptionist
Michael Ellison
Naval Officer