Private Moscow by James Patterson

The best international investigation series since Jason Bourne!  In this action-packed thriller, an invitation from an old friend draws Private investigative agency founder Jack Morgan into a deadly conspiracy. 

On a cold January morning, Jack Morgan stands inside the New York Stock Exchange with his former US Marine comrade whose company is being launched onto the market, eagerly awaiting the opening bell.

But before the bell rings, a bullet rips through the air and finds its mark.In the aftermath of the murder, the victim's wife hires Jack to find the killer. As the head of Private, Jack has at his disposal the world's largest investigation agency. What he discovers shakes him to his core. Jack identifies another murder in Moscow that appears to be linked. So he heads to Russia, and begins to uncover a conspiracy that could have global consequences.

With powerful forces plotting against him, will Jack Morgan make it out alive?