NEW YORK TIMES BESTSELLER - FINALIST FOR THE ITW THRILLER AWARD - Perfect husband. Perfect father. Perfect liar? "Terrific."--John Grisham "Superb."--Lee Child "Breathtaking, heart-pounding."--Louise Penny "A fast-paced, relentlessly gripping read."--Chris Pavone Vivian Miller. High-powered CIA analyst, happily married to a man she adores, mother of four beautiful children. Until the moment she makes a shocking discovery that makes her question everything she believes. She thought she knew her husband inside and out. But now she wonders if it was all a lie. How far will she go to learn the truth? And does she really . . . . . . NEED TO KNOW? Film rights sold to Universal Pictures for Charlize Theron - Rights sold in more than 20 markets "Shaping up to be one of the year's biggest new thrillers."--Entertainment Weekly "So timely . . . Think of the perfect mix of Homeland and The Americans. . . . Need to Know needs to be read by all who relish spy novels. As entertaining as it is informative and as irresistible as it is impossible to put down."--Providence Journal "Pulse-pounding."--O: The Oprah Magazine "Accomplished . . . a nonstop thriller tapping into a hot mix of contemporary digital counterintelligence, old-school spying and ageless family drama."--Shelf Awareness "An early contender for next year's Gone Girl."--GQ (UK) "The Russia page-turner that should be on everyone's list."--New York Post