Null Set

The mathematic mercenary returns to hunt down an LA crime lord—and hopefully not lose her sanity—in this science fiction thriller for fans of John Scalzi and Greg Rucka.

"This exciting SF thriller sequel to Zero Sum Game keeps up the pace and piles on the tricky twists. . . . Readers who appreciate suspenseful science fiction will enjoy this vigorous novel." —Publishers Weekly

Cas Russell has decided to Fight CrimeTM—with her extraordinary mathematical ability, she can disarm bombs and outshoot an army.But every power has a weakness, and Cas's sanity is fracturing . . . just when she's gotten herself on the hit list of every crime lord on the West Coast. And in the crosshairs of her best, only, sociopathic friend.

Forget saving the world—Cas may not be able to save herself.