Here’s a quick summary of “Guess What She Did.”

Georgina Graham, a young, striving Wall Street dealmaker, is in the hunt for a quick score. But when she engineers the hostile takeover of a biotechnology startup, the deal turns deadly. And the strangely beautiful Detective Sam Mori—a woman struggling with a bizarre secret obsession—turns out to have far more than a professional interest in the case.

“Guess What She Did” is an exceptionally fast-paced mystery—the pages just zip along. Its entertaining mix of irony, suspense, relationships and redemption will appeal to readers who enjoy poetic justice served up with a light hand and a wry smile.