Frank Jones (Michael Caine) is an ordinary law abiding businessman. He served his country during the war, and he is very proud of his son Bob (Nigel Havers), a Russian linguist and translator.
Frank's world is shattered by the arrival of the police to tell him his son is dead. The plot thickens when the inquest verdict is 'Accidental Death'. Frank embarks on his own investigation into his son's death and discovers that there are no limits to what the government will do to protect its secrets. When he finally unravels the truth, it's time to take matters into his own hands.
