The freezing morning air rushed into the warm living room of the chalet as the wooden door swung open. Clara stood completely frozen on the welcome mat, her breath catching tight in her throat. The heavy golden sunrise over Lake Zurich did nothing to warm the sudden ice in her veins.

The Swiss police officer standing on the porch looked stiff, tall, and utterly unyielding in his dark blue uniform. His silver badge caught the morning light, gleaming coldly against his coat. Behind him, two heavily armed guards stood on the snow-covered steps with their gloved hands resting flat on their holstered sidearms.

"Clara Vance?" the lead officer repeated, his...