Echo

Charlie Cooper has one job.

Stop the assassin.

An American operative known only as ECHO has been eliminating powerful figures standing in the way of a multi-billion-dollar Pacific trade deal. His latest target is a Taiwanese businessman travelling to Paris with his family to celebrate his daughter’s eighteenth birthday.

Britain wants the killings to stop—but without triggering a diplomatic crisis with its closest ally. Cooper is sent undercover as a luxury concierge, posing as the man responsible for every detail of the family’s stay, from five-star hotels to a lavish birthday cruise along the Seine.

But ECHO is a ghost. No photograph. No real name. No pattern.

With Paris as the battleground and a crowded riverboat full of VIPs caught in the crossfire, one mistake will spark an international incident—and one assassin will stop at nothing to finish the job.