Stormchild (The Thrillers #4)

Tragedy has decimated Tim Blackburn's safe and comfortable existence. Having already lost a son in a terrorist attack, he must now cope with the death of his beloved wife, killed in a mysterious explosion at sea. And all that remains of his destroyed family is his missing daughter Nicole, last seen in the company of Caspar von Rellsteb—the mad, charismatic leader of the shadowy environmental activist group called Genesis—who keeps an iron-fisted hold over his fanatically dedicated followers. Determined to free Nico…