powered by AFI
The film's working title was The Black Pawn. The picture was originally released in England in 1952 under the name Escape Route. The opening credits include the following statement: "Scenes from The Tate Gallery through the co-operation of the trustees and director thereof." The film begins with a voice-over narration detailing how Berlin became politically and physically divided after the war, and dramatizing some of the abductions of prominent scientists in Germany, London and New York City.