YILENA HOLT POV

I clicked the red button, then leaned back slightly, my eyes fixed on the screen as I waited.

The seconds ticked by with nothing happening, and just as I was about to cuss out in frustration, the system flickered, the lights around the room blinking along with it as the entire security system began to short-circuit.

A slow smile spread across my face. Bingo.

Helena and I had been working on this for days, trying to figure out exactly how long it would take to bring the system down without triggering every alarm in the house, and finally it was working.

I reached for the keyboard, my...