The Edge of a Node Cathy and Max are patients in the hospital. James, Moti and Willie visit Max. As they return to camp, they come across a motorcycle dispatch rider in the
Royal Corps of Signals who has been fatally injured in a traffic accident. This is the first of several deaths in the novel, most accidental or incidental. Cathy and Max are soon discharged from hospital, "on probation". Max returns to duty. Cathy gains employment as a barmaid; she and James meet and fall in love (a major plot line which continues to the end of the novel). Brian is convinced that there is a spy in or near the camp. He meets Best while he and other officers are visiting Lady Lucy's for various purposes (mostly, for sexual intercourse with Lucy) and arranges to be shown round the hospital. In Lucy's library, Willie discovers the manuscript of a
trio-sonata for flute, violin and piano by the fictional late 18th century composer Thomas Roughead (this forms a minor sub-plot). Best attempts to rape Lucy but James rescues her.
The Founding of the League Willie receives an anonymous poem which shocks him. It is an attack on God, which to him as a clergyman means that the writer needs help in case he falls into the sin of despair. He wonders if it might have been written by Andy, who is grieving over the death by illness of a close friend; but later assures himself that it was not. Willie discovers Brian searching his room, in his capacity as security officer. Max fails to seduce Andy. Brian visits the hospital, where he drops heavy hints about the secret nature of the project at the camp. Alastair summons Brian back urgently, because public notices have been discovered in the camp advertising the formation of a branch of "The Anti-Death League". Such an abnormal happening may compromise the project. James discovers a lump in Cathy's breast. Several officers attend the inaugural meeting of The Anti-Death League, as do a few ordinary soldiers. The organiser of the meeting does not identify himself and is not identified. Brian concludes that the anonymous organiser is not the spy he has been chasing. James (who has the highest security clearance for Operation Apollo) says to Max (who does not) that he visualises a lethal node, a military term for a place which it is death to enter, but one extending in time rather than in space. It began with the death of the dispatch rider, and will end only with the death of someone as little known to them as he was. James tells Max what Operation Apollo involves. The weapon is tested in Exercise Nabob. Best is seen entering the restricted area. At about the same time, news is radioed through that Cathy has breast cancer. Brian orders that Best be kept under observation and not apprehended. Best evades the observers. While returning from the exercise, the engine of the lorry carrying the weaponry catches fire, and it has to be unloaded in a hurry, as Best sees. Attempts to capture him are unsuccessful.
Operation Apollo Cathy and James are having a long bedroom conversation about the nature of human relationships, when their room is lit up by the flash of what might be a night time use of the weapon. It turns out that one of the weapons has been stolen, and fired, destroying a ruined priory. Venables points out several difficulties in attributing this to Best. Jagger now arrives at the camp, and sees similar difficulties to Venables. One of Brian's agents discovers the stolen weapon in the hospital. Brian, Max and Jagger drive there. Brian and Max bluff their way in. Best attempts to have them sedated and committed to his hospital as mental patients ("
sectioned"). There is a struggle; Jagger intervenes in the nick of time; and Best is taken into custody. A spy is discovered in the camp. Shooting breaks out, during which Max displays initiative and Jagger kills the spy with his bare hands. There is one other casualty, an arriving civilian lecturer caught in the crossfire. Jagger has deduced who the anonymous poet, the perpetrator of the Anti-Death League and the thief are; but has several reasons not to pursue any of those matters further. Not least, because Operation Apollo has been a tremendous success. Brian is told that he has admirably performed the function for which he was selected, and of the operation's success. He had known that the weapon test was a cover for something still more secret; he is now told the deepest secret of all. James has withdrawn into himself, not eating or communicating, and is being sheltered by Lucy and Willie, when Brian arrives. He fetches Cathy from hospital, where her breast has been operated on, and tells the two women the true nature of Operation Apollo (though not its deepest secret). Cathy tells James that her treatment should be successful, that she knows the horrific nature of Operation Apollo, that it will not be carried out, and that she loves him. James begins to recover. The novel concludes with a concert of Roughead's music and has a poignant final twist. ==Critical reception==