Three wealthy English gentlemen who made their fortune together - the narrator William Chandos, George Hanbury, and Jonathan Mansel - have settled into country life when a chain of events draws them into a desperate adventure. Mansel's London flat is broken into by agents of Rose Noble, a feared and brilliant criminal, who steals a safe containing private letters written to Mansel by Adèle Pleydell, the American-born wife of Mansel's cousin Boy Pleydell, with whom Mansel is secretly in love. Months later, Mansel receives a ransom note demanding five hundred thousand pounds for the return of the stolen letters. That same evening, a telegram arrives revealing that Adèle has disappeared in Carinthia, Austria, where the Pleydells have been holidaying. The connection is immediately clear: Rose Noble has abducted Adèle herself, using her as leverage to extract an enormous sum. Mansel reveals to his two friends that the stolen papers were love letters from Adèle, and that Rose Noble intends to sell them back not to her husband, but to Mansel, thereby implying a compromising relationship. The three men race overland to Carinthia, where they find Boy Pleydell bedridden with a broken leg and tormented by his wife's disappearance and the silence of any ransom demand. Mansel discovers a ransom note concealed in the estate gatebox, confirming the demand is financial rather than personal, and stabilising the stricken husband's condition. Working methodically across the remote Austrian countryside, the men identify that a spy, Hannibal Rouse, posing as an absurd, bumbling clergyman, has been planted in their midst by Rose Noble. Mansel exploits this by feeding false information through Rouse, while simultaneously tracking Rose Noble's operatives. Chandos, riding on the roof of Rose Noble's car, is carried to the Castle of Gath, a remote, cliff-top fortress built by Emperor Maximilian, where Adèle is imprisoned. He escapes before entering but has identified the location. Using a guidebook to study the castle's layout, the men plan their assault. They signal to Adèle by reflecting sunlight from a watch, confirm she is alive, and learn which tower she occupies. They capture and execute one of Rose Noble's men who has been carrying a gruesome threat. They commission concealed iron ladders, scale the castle walls at night, and discover both a hidden waterfall passage beneath the castle and a rope route down the cliff face. Their initial rescue attempt nearly succeeds. They gain the royal apartments, force their way through to Adèle's gallery, and hammer through a locked door, only to find Rose Noble has anticipated them and holds Adèle as a hostage behind it. Mansel feigns withdrawal, and he and Chandos hide within the castle itself, concealing themselves in a secret spiral staircase beneath the King's Closet. They remove a stone slab to create a future entry point and establish a supply line via the waterfall rope. A second assault is attempted from within and without simultaneously. Adèle is briefly recovered when her guard leaves momentarily, but Rose Noble has intercepted communications and repositioned his forces. Hanbury is captured and left bound in the castle kitchen. The rope line is cut. Mansel and Chandos find themselves trapped in the royal suite with Adèle. Rose Noble confronts the three of them directly in the royal dining room at gunpoint, making explicit his extortion and threatening to degrade Adèle's captivity unless payment is made. Mansel reveals to Rose Noble that he has already told Boy Pleydell of his love for Adèle, neutralising the blackmail over her reputation. He then enrages Rose Noble into a physical attack, strikes him hard, and the three escape into the inner rooms. They discover a secret descending table mechanism in the floor, use it to reach the castle's lower level, and find Hanbury alive. They open the castle gate, admit the servants, and slowly infiltrate toward the southeast tower to which Adèle has been moved. Having traced their way through the dark interior to the southwest tower and then deduced that Rose Noble has transferred Adèle to the opposite tower, Mansel devises a final stratagem. He will descend via the waterfall passage to the terrace, feign a catastrophic fall from a rope, and cry out. The apparent death or critical injury of the man whose value as a payer of ransom is paramount will draw Rose Noble and his men from Adèle's side. In that interval, Hanbury, Bell, and Rowley will seize and lower Adèle to safety while Chandos plays his part below. The plan executes with precision. Chandos shouts, Mansel lies sprawled convincingly on the terrace. Rose Noble and his men pour down to investigate. But at the moment of their greatest success, Adèle, seeing what she believes is Mansel genuinely fallen and broken, abandons the escape and rushes to his side, ruining the plan and returning herself to captivity. In the aftermath, Chandos recovers consciousness alone and unbound on the terrace. He still carries his knife and retains the freedom of the royal suite. Mansel continues his pretence of incapacitation. The struggle for Adèle's freedom remains unresolved, but the castle has been penetrated, its secrets known, its master's power contested, and the love between Mansel and Adèle - acknowledged, mutual, and honourably constrained - has become the quiet heart of the whole enterprise.
By Dornford Yates · First published 1928 · Genre: Adventure Fiction, Mystery, Thriller · 9 chapters