Consent to Kill by Vince Flynn (2005) is the 8th Mitch Rapp thriller (480 pages), where the CIA counterterrorism operative becomes the target of a revenge conspiracy. After killing countless terrorists, Rapp is hunted by a Saudi tycoon seeking vengeance for his son's death. The intense, fast-paced novel finds Rapp, now married and trying to step back, forced to fight for survival.