John Twelve Hawks -The Dark River (Fourth Realm #2)

The Dark River:
The second book in the Fourth Realm series opens in New York City with a stunning piece of news. Gabriel's father, who has been missing for nearly twenty years, may still be alive and trapped somewhere in Europe. Gabriel and his Harlequin protector, Maya, immediately mobilize to escape New York and find the long-lost Traveler. Simultaneously, Michael orders the Brethren—the ruthless group that has been hunting Gabriel—into a full-scale search. Gabriel yearns to find his father to protect him; Michael aims to destroy the man whose existence threatens his newfound power. The race moves from the underground tunnels of New York and London to ruins hidden beneath Rome and Berlin, to a remote region of Africa that is rumored to harbor one of history's greatest treasures. And as the story moves toward its chilling conclusion, Maya must decide if she will trade everything to rescue Gabriel.
A mesmerizing return to the places and people so richly portrayed in The Traveler, THE DARK RIVER is propelled by edge-of-the-seat suspense and haunted by a vision of a world where both hope and freedom are about to disappear.