Seventy-two guns are stolen from a San Francisco police storage facility, causing murders in the city to spike. The shooters show up unrelated-their just connection is that all uses a gun stolen from law enforcement storage. The authorities have no qualified prospects.

Mei Ling, recently brought in as head of the SFPD’s Computer Forensics Group, recognizes a device installed in the same storage facility-one useful for hacking. She’s confident this may be a new connection to help crack the situation. But how?

When the bullets start flying through the window of her own home, Mei knows she’s to something. Right now it’s a competition against time to recognize the hacker.

Before she becomes the next victim.