Jeffrey Layton launched his Yuri Kirov thriller series with THE GOOD SPY and continued it with THE FOREVER SPY, THE FAITHFUL SPY and THE VIGILANT SPY. He is also the author of the acclaimed novels VORTEX ONE, WARHEAD, and BLOWOUT. Jeff is a professional engineer who specializes in coastal engineering. He uses his knowledge of diving, yachting, offshore engineering, and underwater warfare in the novels he writes. He lives in the Pacific Northwest.