Routine tests on a traffic accident victim lead to shocking discoveries when the man's blood is found to be unidentifiable and x-rays reveal a disc embedded in his brain. His fabulous tale of being an escaped prisoner from an alien spaceship takes a turn for the sinister when the hospital staff realise that they're under a state of siege...

Cast:Edward Judd, Yoko Tani, Valerie Gearon, Lyndon Brook, Ric Young, Tsai Chin,

Genre:Science Fiction,

country:United Kingdom,

Production:Merton Park Studios,