Billion Dollar Brain

by Len Deighton

Harry Palmer (Michael Caine), who has left MI5 to work as a private investigator, is told by a mechanical voice on the phone to take a package to Helsinki. The package contains six virus-laden eggs that have been stolen from the British government's research facility at Porton Down. In Helsinki, he is met by Anya ([[Françoise Dorléac]]), who takes him to meet her handler, Harry's old friend Leo Newbigen (Karl Malden). Leo is in love with Anya, but Harry sees that she is only pretending to reciprocate.

After determining that he cannot trust either Leo or Anya, Harry is abducted by his former MI5 superior, Colonel Ross (Guy Doleman), who coerces him into working once more for the British government in pursuing the conspiracy and getting the eggs back.

Leo takes Harry to a secret room where a computer issues daily instructions to the local team, speaking in the same voice that summoned Harry to Helsinki. The computer orders Leo to kill Anya, but he doesn't. All go to meet a scientist who assesses the value of the eggs and Harry is introduced as a new operator.

Harry is ordered to Latvia, in the USSR, where he embeds with rebels to obtain intelligence.

After being captured and left for dead, Harry is set free by Colonel Stok (Oskar Homolka), an old acquaintance from the KGB. Back in Helsinki, Anya tries to kill Harry while seducing him, then confesses that the computer told her to kill him. Harry locks her in a room and waits for Leo at the computer. Leo offers to pay off Harry for his trouble, but Harry insists on half of the money Leo is getting from whatever the conspiracy is all about.

The pair go to Texas, where Harry meets oil tycoon General Midwinter (Ed Begley). Midwinter proudly displays his billion-dollar "brain", a room full of computers dispensing orders to his agents around the world. The General is in the midst of planning a rebellion in Latvia, which he thinks will trigger the fall of Communism worldwide. He thinks Leo has hired hundreds of Latvian agents, but actually there are only a handful, as Leo is pocketing the money. The General plans to begin a rebellion using these agents while his own private army invades to back them, and simultaneously infect the Red Army with the viruses. Meanwhile, Leo subverts Midwinter's computer orders and escapes with the eggs. Midwinter realises Harry is a double agent, but Harry tells him what Leo is doing and convinces him that he can track Leo down.

Back in Helsinki, Leo and Anya board a train for Moscow with the eggs, but Harry, accompanied by two of Midwinter's men, chases the train in a car, intercepts it, and escorts Leo off the train with the eggs. Anya shoots Harry's bodyguards as the train pulls away from a station near the border. Leo runs after the train with the eggs. Anya takes them, but pushes him off the train. "She used me", Leo tells Harry. He then offers to help Harry stop Midwinter's insane plan, which could trigger World War III.

In personnel carriers disguised as his company's oil tanker trucks, Midwinter leads his private army across the frozen Gulf of Finland into Latvia. Harry and Leo attempt to catch up with the General, but he orders their car to be fired upon and Leo is killed. Meanwhile, Stok is fully aware of the invasion and orders bombers to intercept the convoy. Rather than bombing it directly, they simply drop the bombs on the ice in its path. The entire convoy plunges through the ice into the freezing water, and all the vehicles and soldiers—including General Midwinter himself—sink to an icy Baltic grave.

Harry awakes alone on an ice floe. Stok arrives in a helicopter with Anya, introducing her as his agent. He gives the eggs to Harry, explaining, "We don't need them; we have our own ideas." Back in London, Harry delivers the eggs to Ross, who agrees to reward Harry with a promotion. However, when he opens the package to inspect the eggs, he finds it is now full of baby chicks.