While Nick Cameron is returning to England from the continent with mysterious cargo in the cabin section of his small aircraft, he is thrown off-course by a severe electrical storm and loses radio contact. To his surprise and horror, he is arrested upon landing and accused of being a traitor in connection with the cargo he has been carrying - which, unknown to him, contained plutonium. Although he pleads innocent, Nick is not believed and is sentenced to a long term in prison. While in prison, he is subjected to special experimentation at a mysterious laboratory - with one unnerving, and unexpected, side-effect of the experiments being intermittent invisibility. —David McAnally
Neil Morrissey
as Nick Cameron
Barbara Flynn
as Me Jeffries
Lucy Akhurst
as Alice Grant
Mark Womack
as Joe Cameron
Peter Eyre
as Forstarter
Dominic Jephcott
as Dr. Chivers
Roger Brierley
as Head
Shaun Prendergast
as Gimson
William Chubb
as Gordon Wells
James Laurenson
as Moreau
Elizabeth Jasicki
as Kate
Julian Sims
as Jerry