"Once a key player in a clandestine CIA squad, Sam Callahan thought he had finally found a safe, normal life as a rookie lawyer in DC with the woman he loves.
But when called to a covert intelligence mission in the heart of Russia, he can’t refuse risking it all once more. This time, he’d be joining his estranged father, the Lion, a deep-cover agent Sam never even knew existed.
When the operation goes wrong and his team is ambushed, Sam fears a setup. At least he escaped with his life. And so did his father. But why? With a target on his back, he must hunt down the truth behind the betrayal in Moscow—and find the Lion again."