Book 1: The Mystery of the Blue Train

Murder! When the Count de Roscanvel's body is found on the railway tracks, shot through the heart then hit by the Blue Train from Paris to Marseille, police accuse France's top young novelist, and the count's beautiful wife is suspected of complicity. There's only one place Countess de Roscanvel can turn. Chantecoq. With the help of his wily secretary Météor, Chantecoq faces a race against time to save an innocent man.

Book 2: The Haunted House

Artist Jean Lachesnaye lives an idyllic life with his wife Yvette and infant son in his villa on Brittany's coast. But when a convivial dinner party gives way to a night of supernatural chaos, the dream unravels. His servants abandon him, and his son vanishes, replaced by a sickly child at death's door.

His life in tatters, Lachesnaye is desperate. But fortuitously a private investigator from Paris is on holiday in the region...Chantecoq. France's greatest bloodhound swings into action with his faithful secretary Météor. To unravel the mystery of this haunted house, and to reunite a fractured family.

Book 3: The Aviator's Crime

Jacques Moret is the dashing man of the hour: a fearless flying ace, devoted to aviation. But even as Moret celebrates a historic Paris-Buenos Aires crossing, poison pen letters accuse him of lusting after aircraft designer Florent Avrillé's wife, the stunning but faithful Belle Antoinette, and of trifling with the affections of Avrillé's debutante daughter. Then, on the eve of her wedding, young Martine Avrillé is subjected to a terrifying assault in her own bedroom. The culprit? She swears it is none other than Jacques Moret.

Only one man can uncover the truth behind this aviator's crime. Chantecoq throws himself into the baffling case with his usual flair, only to discover that this time the truth is far stranger and more terrifying than he could ever have predicted.