The Woman in Suite 11 by Ruth Ware

A career-defining assignment brings journalist Lo Blacklock to a luxurious chateau on Lake Geneva—and gives her the chance to interview its elusive billionaire owner, Marcus Leidmann. But when a late-night summons leads Lo to a woman in mortal danger, the trip becomes a desperate pursuit across Europe.

As Lo races to uncover the truth and protect a stranger, she must decide how much she’s willing to risk—and whether the woman she’s trying to save can be trusted. A gripping thriller about ambition, danger, and the secrets hidden behind a life of luxury.