The MacKintosh Man
Tags: humor, action, sadist

Plot synopsis:
Joseph Rearden, a British Intelligence agent, arrives in London and makes a rendezvous with MacKintosh, the head of his organisation, in a discreet office located just off Trafalgar Square. MacKintosh and his deputy, Mrs Smith, inform him of a simple way to steal diamonds which are transported via the postal service to avoid attention. This he does, apparently getting successfully away after punching a postman, and making off with the diamond-filled parcel. However, that evening, in his hotel room he is paid a visit by two Metropolitan Police Service detectives who have received an anonymous phone call advising them about the robbery. They are unconvinced by Rearden's pretence to be an innocent Australian who had recently arrived in London.
The judge at his trial is angered by the failure to recover the stolen diamonds from Rearden, who he believes has stashed them away somewhere, and sentences him to twenty years in jail. Rearden is shipped off to HM Prison Chelmsford. He slowly begins to blend in with the other prisoners, and is assigned to laundry-washing duties. A few days after entering he encounters Slade, a former British intelligence officer kept in high security after having been exposed as a KGB mole. He makes innocent enquiries of his fellow inmates about Slade, but not a great deal is known about him.
A few weeks later, he is approached by a well-spoken inmate who offers to act as a go-between with an organisation which can spring him from the prison in exchange for a large cut of the stolen diamonds. They are used to helping prisoners escape, and have another exit planned shortly, which he can join, if he is prepared to put up the money, to which he agrees. Two days later a diversion is arranged, and smoke bombs are hurled over the walls. Using the smoke screen Rearden and a fellow prisoner, who turns out to be Slade, are lifted over the walls by a cargo net and driven away at high speed. They are then drugged by injection, and taken to a secret location, somewhere in wild, deserted countryside. When Slade and Rearden awake, they are told they will be kept there for a week until hunt for them dies down.
In London, MacKintosh discreetly monitors the progress of Rearden. His entry into prison has been a planned sting operation to smoke out the organisation. It is now intended they will be raided, rounded up and Slade returned to prison. Following a speech attacking the handling of the Slade escape by an old friend and war comrade, Sir George Wheeler MP in the House of Commons, MacKintosh approaches him and advises him it would be better to remain silent or risk embarrassing himself. Wheeler, however, despite masquerading as a staunchly patriotic right-winger, is actually a Communist and an agent of the KGB. He immediately tips off the head of the organisation where Rearden is being held. MacKintosh had suspected Wheeler and had used their meeting to try to flush him out. Before MacKintosh can act, he is run down by a car and dies soon afterwards.
In the meantime, Rearden falls under suspicion by the escape organisation. Doubting his claims to be an Australian criminal, they beat him violently and savage him with a guard dog. Eventually, he manages to fight back and escape the building, setting it on fire. He makes out across country, pursued by his guards and the dog. He is finally forced to drown the dog in a stream to throw his assailants off the scent. He then makes it to a nearby town, where he discovers he is on the west coast of Ireland and has apparently been staying on the estate of a close friend of Sir George Wheeler. He contacts Mrs Smith in London, who flies to meet him in Galway. Realising that Slade has been smuggled out of Ireland on the private yacht of Wheeler, they now head to Valletta, Malta, where Wheeler is heading.
Once in Malta, they try to infiltrate one of Wheeler's parties and discover the whereabouts of Slade. Wheeler soon recognises Mrs Smith — the daughter of his old friend MacKintosh — drugs her, and takes her aboard his yacht. Rearden tries to get the Maltese police to raid the boat, but they refuse to believe that a respected man as Wheeler can be involved in kidnapping and treason, so instead they move to arrest Rearden, who is still a wanted man for his earlier faked diamond robbery. So, Rearden is again forced to flee, but manages to follow Wheeler to a church where he and Slade are holding Mrs Smith. He pulls a gun on them, and orders them to hand over Mrs Smith. Presented with a Mexican standoff, Wheeler and Slade try to persuade Rearden to let them go unharmed, in return for which they will also spare him and Mrs Smith. Reluctantly Rearden agrees, but Mrs Smith takes up a gun and shoots Slade and Wheeler, avenging the murder of her father. She has fulfilled her orders and bitterly abandons Rearden, angry at the way he has not followed his own orders.