Evelyn watched through the gap in the door as Sarah pulled the small black flash drive out of Julian's computer. The blue light on the drive went off, and Sarah shoved it deep into her jacket pocket.

Sarah turned around fast, her eyes darting toward the back door of the office. That door led straight into the private server room, a high security zone where all the main computer network cables met.

Evelyn knew that if Sarah reached the main elevator, she would escape into the crowded streets before anyone could stop her. Without wasting a single second, Evelyn slipped through the office door and followed her like a quiet...