The heavy steel blast shutters slammed hard against the marble floor, cutting off the city lights and sealing the penthouse like an iron tomb. The harsh red warning lights blinked rhythmically against the white walls, casting long shadows across the empty living room.

Clara stepped back, her heart racing against her ribs as she looked at the thick metal walls that now trapped them inside.

Jax walked over to the nearest shutter, hitting the solid steel with his bare fist. The metal did not even dent. He turned around, shaking his head with a grim look on his face. "These shutters are reinforced titanium plate. Manual override is locked from...