A missing girl, a secret document, and a shadowy enemy who will kill to stay hidden—Tommy and Tuppence have just walked into the most dangerous adventure of their lives.
What begins as a simple business scheme quickly turns into a high-stakes race against a ruthless mastermind known only as Mr. Brown. With political power hanging in the balance, the spirited young duo plunge into a world of spies, disguises, coded messages, and deadly traps.

Praised as "a fast, witty thriller with irresistible charm," this novel introduces two of Christie's most beloved characters—bold, clever, and wonderfully unpredictable. Their chemistry, humor, and daring make the mystery as entertaining as it is suspenseful.

Perfect for readers who love thrilling twists, energetic characters, and espionage-style intrigue, this story keeps the tension high until the final shocking reveal.

Dive into the mystery now—and join Tommy and Tuppence as they chase the adversary no one else can catch.