The story is set in British colonial India. A young Indian prince named Azim learns that his elder relative Prince Guhl is secretly plotting against the British troops staying in his palace. To warn the British troops and prevent a massacre, brave Azim tries to send them a coded message by beating on his drum in a certain rhythm. It's a race against time for the young prince to alert the soldiers before Guhl can carry out his violent plans against them.
Engels
The Four Feathers
At The Villa Rose
The House of the Arrow (Annotated) : Enriched Edition. A Golden Age Detective Mystery of Inheritance, Murder, and Psychological Suspense in Provincial France
They Wouldn't Be Chessmen (Annotated) : Enriched Edition. A Golden Age Monsieur Hanaud Mystery of Misdirection, Psychological Suspense, and Human Unpredictability
The House of the Arrow : Enriched edition.
They Wouldn't Be Chessmen
Black Cat Weekly #112
Las cuatro plumas (The Four Feathers)
A Romance of Wastdale
The Winding Stair
Musk and Amber
Dilemmas