The heavy steel blast doors slammed shut with a deafening boom that echoed deep through the underground stone walls. Marcus Vance was trapped inside the safety deposit chamber, screaming and banging his fists against the thick metal until his hands bled. High-pitched emergency sirens began to echo down the long granite hallway, signaling that Swiss federal police officers were already rushing down the main elevators to take Marcus into custody.

Clara stood in the center of the subterranean hallway, watching the red warning lights flash over the sealed vault door. A sense of incredible relief washed over her body, warm and overwhelming. The man who had terrorized her family, stolen...