"This exhilarating FBI thriller by #1 New York Times bestselling author Catherine Coulter finds Savich and Sherlock confronting two baffling mysteries. A young wife is forced to confront a decades-old deadly secret when a medium connects her to her dead grandfather. A vicious psychopath wants ultimate revenge against Savich, but first, she wants to destroy what he loves most-his family. A series of three red boxes are delivered personally to Savich at the Hoover Building, each one containing puzzle pieces of a town only FBI agent Pippa Cinelli recognizes. Savich sends in Cinelli to investigate undercover but someone knows who she is. Savich and Sherlock are up to their eyebrows in danger, but can they figure out the red box puzzle and the young wife's secret before it's too late?"

Deadlock by Catherine Coulter is the 24th book in the FBI Thriller series. This gripping novel follows FBI agents Dillon Savich and Lacey Sherlock as they investigate a series of murders that seem to be connected to a mysterious painting. As they delve deeper into the case, they uncover a web of secrets and lies that threaten to destroy everything they hold dear. With its fast-paced action, complex characters, and intricate plot, Deadlock is a must-read for fans of Catherine Coulter and the FBI Thriller series.