|Directed by||Don Siegel|
|Produced by||James B. Harris|
|Written by||Walter Wager (novel)
|Music by||Lalo Schifrin|
|Cinematography||Michael C. Butler|
|Edited by||Douglas Stewart|
After the Cuban Missile Crisis, the Soviet Union planted a number of long-term, deep-cover sleeper agents all over the United States, spies so thoroughly brainwashed that even they did not know they were agents and can be activated only by a special code phrase (a line from Robert Frost's poem "Stopping by Woods on a Snowy Evening," followed by their real given names). Their mission was to sabotage crucial parts of the civil and military infrastructure in the event of conflict.
More than 20 years pass, and the Cold War gradually gives way to détente. Nikolai Dalchimsky (Donald Pleasence), a rogue KGB headquarters clerk, travels to America, taking with him the Telefon Book, which contains the names, addresses and telephone numbers of all the agents. He starts activating them, one by one. American counterintelligence is thrown into confusion when seemingly ordinary citizens blow up what are formerly top secret facilities that were declassified or abandoned years before, then commit suicide.
The KGB dares not tell its political leaders, much less the Americans, about its negligence in not deactivating the spy network. Major Grigori Bortsov (Charles Bronson), who is selected for his photographic memory, memorizes the contents of the only other copy of the Telefon Book. He is then sent to find and stop Dalchimsky quietly before either side learns what is happening and embarrasses the KGB or possibly starts a nuclear war. He is given the assistance of only a single agent planted in America, Barbara (Lee Remick).
Eventually, Bortsov discovers the method behind Dalchimsky's madness: he chooses the agents by the first letters of their hometowns, "writing" his own name in sabotage across America. Using that information, Bortsov is finally able to locate Dalchimsky and kill him.
However, there are a number of twists. Barbara has orders from the KGB to assassinate Bortsov once he succeeds to get rid of a dangerous loose end. She is a double agent, but when she informs her American superior, Sandburg (Frank Marth), he also tells her to kill Bortsov, so she will gain the confidence of the KGB. However, she has fallen in love with her would-be target. She informs Bortsov, and together, they blackmail both sides into leaving them alone, holding the threat of the remaining Telefon agents over their heads.
- Charles Bronson as Bortsov
- Lee Remick as Barbara
- Donald Pleasence as Dalchimsky
- Tyne Daly as Putterman
- Alan Badel as Colonel Malchenko
- Patrick Magee as General Strelsky
- Sheree North as Marie Wills
- Frank Marth as Sandburg
- John Mitchum as Harry Bascom
- Ed Bakey as Carl Hassler
- Hank Brandt as William Enders
- Åke Lindman as Lieutenant Alexandrov
- Ansa Ikonen as Dalchimsky's Mother
- Kathleen O'Malley as Mrs Maloney
Principal photography begin in January of 1977.
As parts of the film were shot in Finland, there are several cameo appearances by Finnish movie stars, most notably Ansa Ikonen, arguably the most popular leading lady in the history of the country's cinema.
The city skyline depicting Houston, where part of the story line occurred, is actually that of Great Falls, Montana, where the majority of the film was shot. During filming, the crew had to order two truckloads of snow needed for one of the scenes, because the chinook winds in the area took away snow they had. They were trucked from the mountains. Filming in downtown Great Falls was also included. The exploding building in one scene is actually the controlled demolition of the old Paris Gibson Junior High School. The explosion scene was filmed on February 20th, 1977. The present day Paris Gibson square was undamaged, but the explosion started roof fires on a couple of nearby houses that were quickly extinguished by city firefighters hired by the movie company on stand by.
The Houston scenes were shot on a Hollywood backlot, while the interior of the Houston Hyatt Regency was portrayed by 5 Embarcadero Center in San Francisco, California - the location which was also used in The Towering Inferno.
The scenes with fires and explosions at a rocket engine test site were filmed at Rocketdyne's Santa Susana Field Laboratory in the mountains northwest of Los Angeles.
According to director Siegel, actress Lee Remick was terrified of Charles Bronson, and when asked to touch his face during a scene, responded, "I don't dare. He'll bite me!"
- The Manchurian Candidate
- The Simultaneous Man
- The Naked Gun: From the Files of Police Squad!, a comedy film whose plot borrows heavily from Telefon
- Salt, an 2010 action film starring Angelina Jolie about Russian sleeper agents
- Assassinations in fiction
- Conspiracy thriller
- Homeland (TV series)
- Variety film review; December 14, 1977, page 12.
- Siegel, Don (1993). A Siegel Film. Faber & Faber. pp. 419–433. ISBN 0-571-16270-3.