An epicurean mystery featuring the iconic sleuth and his sidekick from the author who “brings Nero Wolfe, late of Rex Stout, gloriously back to life” (Chicago magazine).

A dark cloud has fallen over Nero Wolfe’s New York brownstone. For days, house chef Fritz Brenner has worn a worried expression, caused by the news from back home in Switzerland that his beloved cousin is missing. When a hired detective on the ground is unable to turn up any leads, Fritz takes it upon himself to return to Geneva and launch his own investigation. However, when Fritz himself goes missing, it’s up to Wolfe and his faithful assistant Archie Goodwin to travel to Geneva and save the day.

Despite the disruptions of international travel, which are particularly intense for an enormous private detective who rarely, if ever, leaves his 59th Street home, the trip goes relatively smoothly—that is, until they reach their destination and Archie’s puzzling inquest begins. He soon uncovers a tangled case that straddles the French-Swiss border in the shadow of Mont Blanc, and an underground network that will stop at nothing—not even murder—to preserve its secrets.