John Huston directed this little-seen thriller that stars Paul Newman as Joseph Reardon, a member of British Intelligence sent on an undercover mission by his boss Mr. Mackintosh(played by Harry Andrews) in a prison where he is given a fictitious criminal background in order to infiltrate a criminal gang where the leaders are imprisoned. He assists in their eventual escape which leads from Ireland to Malta. His contact(played by Dominique Sanda) is a beautiful but aloof woman who has her own personal reasons for the assignment, which includes a Parliament member(played by James Mason) who isn't what he pretends to be... OK espionage thriller with good cast and direction, though the plot does seem overly complicated at times.