American Operator by Brian Andrews and Jeffery Wilson Tier One #4

Dempsey and the Tier One crew are up to their ears in international threats. Assassins kill an ambassador in Turkey and kidnap his assistant, prompting Tier One’s involvement in rescuing the young CIA agent. But the mastermind behind the plot is not who everyone, including his own terrorists’ allies, believes he is. The team is always one step behind but needs to get in front of this or America could very well lose a major ally to the Russians.

Saddle yourself in for this non-stop thrill ride that doesn’t let up until the last page.