“Never tell all you know—not even to the person you know best.” — Agatha Christie In the chaotic aftermath of World War I, danger lurks not just on battlefields, but in drawing rooms, docks, and darkened alleys. When a mysterious young woman vanishes with a secret that could change the world, two spirited adventurers—Tommy and Tuppence—plunge headfirst into a deadly conspiracy of spies, double-crosses, and coded messages. Agatha Christie’s The Secret Adversary marks the dazzling debut of one of literature’s most beloved detective duos. Full of wit, daring, and unexpected twists, this high-stakes espionage thriller sweeps readers into a game of secrets where nothing—and no one—is what it seems. Rediscover the classic that introduced Tommy and Tuppence and set the stage for a lifetime of crime-solving brilliance.