Even as Coulter stalwarts Dillon Savich and Lacey Sherlock hunt for a female serial killer, Special Agent Lucy Carlisle discovers that years ago her grandmother may have murdered her grandfather. Moving into grandma's mansion to figure out what happened, Lucy unearths a skeleton and a ring associated with a shadowy group called the Protectors. More thrills from a No. 1 best-selling author; buy multiples.

At the start of bestseller Coulter's exciting 15th FBI thriller featuring husband-wife agents Dillon Savich and Lacey Sherlock (after Whiplash), Dillon arrives one night at a Georgetown convenience store in Washington, D.C., just in time to thwart an armed robbery. While the robbery, which left one gunman wounded and a female accomplice dead, is never far from his thoughts, Dillon soon has an important case to pursue with Lacey—investigating a serial killer who may be related to the notorious Ted Bundy and has a chameleon-like ability to change appearances. Fellow agents Lucy Carlyle and partner Cooper McKnight also join the hunt for the serial killer, but find themselves immersed in another mystery after Lucy learns that her grandfather didn't really just vanish from her life 20 years earlier. Lucy's brush with mortal danger leads her into Cooper's arms and closer to uncovering her family's dark secrets. A tight plot full of unexpected twists will keep readers turning the pages. (July)