The Copper House : $b A detective story

In the restless spring of 1917, Stockholm teeters between war and chaos, a crossroads where spies, profiteers and hidden societies clash beneath the city’s fog‑laden streets. A cryptic open letter in a modest weekly newspaper warns of a shadowy figure—“the Man in the Whirlpool”—who seems to steer the turbulence for his own mysterious purpose. The atmosphere crackles with suspicion as ordinary citizens debate the nature of espionage while unseen forces plot their next move.

Enter Maurice Wallion, a sharp‑minded detective whose keen instincts draw him into the vortex of intrigue. Early investigations lead him from a restless baron awaiting a pivotal document to a young Californian bearing unsettling news, and finally to a series of bewildering encounters that suggest a single, formidable mind is orchestrating the disorder. As Wallion pieces together fragments of rumor and fact, he discovers that the real danger lies not in a single act of sabotage, but in a hidden hand directing the entire whirlpool of conflict.