The Thirty Nine Steps

Richard Hannay, the protagonist and narrator, an expatriate Scot, returns from a long stay in southern Africa to his new home, a flat in London. One night he is buttonholed by a stranger, a well-travelled American, who claims to be in fear for his life. The man appears to know of an anarchist plot to destabilise Europe, beginning with a plan to assassinate the Greek Premier, Karolides, during hisforthcoming visit to London. He reveals his name to be Franklin P. Scudder and remarks that he is dead, which holds Hannay's attention. Scudder explains that he has faked his own death in order to avert suspicion. Hannay lets Scudder hide in his flat, and sure enough the next day another man is discovered having apparently committed suicide in the same building. Four days later Hannay returnshome to find Scudder dead with a knife through his heart.
Hannay fears that the murderers will come for him next, but cannot ask the police for help because he is the most likely suspect for the murders. Not only does he want to avoid imprisonment, but he also feels a duty to take up Scudder's cause and save Karolides from the assassination, planned in three weeks' time. He decides to go into hidingin Scotland and then to contact the authorities at the last minute. In order to escape from his flat unseen, he bribes the milkman to lend him his uniform and exits wearing it. Carrying Scudder's pocket-book, he catches an Anglo-Scottish express train leaving from London St. Pancras station. Hannay fixes upon Galloway, in south-west Scotland, as a suitably remote place in which to make his escapeand remembers somehow the town of Newton-Stewart, which he names as his destination when he buys his ticket from the guard.
Arriving at a remote station somewhere in Galloway (apparently not Newton Stewart itself), Hannay lodges in a shepherd's cottage. The next morning he reads in a newspaper that the police are looking for him in Scotland. Reasoning that the police would expect him to head fora port on the West Coast, he doubles back and boards a local train heading east, but jumps off between stations. He is seen but escapes, finding an inn where he stays the night. He tells the innkeeper a modified version of his story, and the man is persuaded to shelter him. While staying at the inn, Hannay cracks the substitution cipher used in Scudder's pocket-book. The next day two men arriveat the inn looking for Hannay, but the innkeeper sends them away. When they return later, Hannay steals their car and escapes.
On his way, Hannay reflects on what he has learnt from Scudder's notes. They contradict the story that Scudder first told to him, and mention an enemy group called the Black Stone and the mysterious Thirty-nine Steps. The United Kingdom appears to be in danger of aninvasion by Germany and its allies. By this time, Hannay is being pursued by an aeroplane, and a policeman in a remote village has tried to stop him. Trying to avoid an oncoming car, Hannay crashes his own, but the other driver offers to take him home. The man is Sir Harry, a local landowner and prospective politician, although politically very naive. When he learns of Hannay's experience of SouthAfrica, he invites him to address an election meeting that afternoon. Hannay's speech impresses Sir Harry, and Hannay feels able to trust him with his story. Sir Harry writes an introductory letter about Hannay to a relation in the Foreign Office.
Hannay leaves Sir Harry and tries to hide in the countryside, but is spotted by the aeroplane. Soon he spots a group of men on the ground searching for him.Miraculously, he meets a road mender out on the moor, and swaps places with him, sending the workman home. His disguise fools his pursuers, who pass him by. On the same road he meets a rich motorist, whom he recognises from London, and whom he forces to exchange clothes with him and drive him off the moor.
The next day, Hannay manages to stay ahead of the pursuers, and hides in a cottage...