Ketchvar III travels to Earth to inhabit the body of an average teenager and assess the damage humans have done to their planet. But even his highly advanced alien intelligence can't prepare him for life as an American teen.

After saving the world's oceans in Firestorm, Jack Danielson goes home to see P.J., his girlfriend and sole remaining touchstone. But she's missing, and blame falls on Jack. Now he's on the run with Gisco, his crafty canine sidekick, and is literally caught up in a whirlwind as he travels to the heart of darkness to rescue P.J.--a journey that will bring him face-to-face with the Dark Lord, the father of his old nemesis. Jack's quest becomes nearly impossible as he discovers that the only person who can stop the Dark Lord is an old man from the future, but no one knows where he is, or if he even exists. But if anyone can find him, it's Jack. The fate of the future is once again in his hands, but will Jack be able to travel halfway around the world, find a missing time traveler, and raise a powerful army in time to save the world?

His mother is not his mother. His father is not his father. And if Jack he hadn't broken the high school rushing record that night, nothing would have changed. He'd just be going out for pizza, playing football, trying yet again to score with his girlfriend, P.J.
But he did break the record. He appeared on the news. And now they have found him.
Ripped from the only world he has ever known, Jack plunges into a space-time-bending game of survival with no way out. The rules are shrouded in secrets they say he can't handle. But some things he learns fast: Trust no one. Never forget that your friends could reveal themselves as your enemies at any second. Every turn leads to betrayal. And if you don't go along with it, you die.
After centuries of abuse, the earth is dying, and it's up to Jack to reverse the decline before the Turning Point, when nothing will ever be the same again. Beaten into shape by a ninja babe and a huge telepathic man's best friend, Jack hurtles across the ocean to save the future from the present and to solve the mystery of his purpose. Exactly who, or what, is Firestorm, and what does it have to do with Jack? And what comes next when everything you have ever known turns out to be wrong?

'Provocative, important and very thrilling novel. I loved it' James Patterson 'A gripping story . . . Klass can weave a tale like few others' David Baldacci 'Terrific. The plotting is impeccable' Sunday Times Thriller of the Month *** America's most wanted man. The world's only hope? For months, the FBI have been on the hunt for a terrorist who seems invincible. The death toll is rising, yet somehow the killer, known only as the "Green Man", has avoided leaving a single clue. This is no ordinary villain. Each attack is carefully planned to destroy a target that threatens the environment. Each time, the protest movement that supports the Green Man grows ever larger. Tom Smith is a young computer programmer with the FBI, trying to escape his father's domineering shadow. An expert in pattern recognition, Tom believes he's spotted something everyone else has missed. At long last, Tom makes a breakthrough. But as he closes in on America's most dangerous man, he's forced to ask himself one question: What if the man you're trying to stop is the one who's trying to save the world? _________ 'A compelling cat-and-mouse chase' The Times 'A whale of a ride' Observer 'Top-notch thriller' Wall Street Journal

Jack Danielson has spent the last year saving the oceans and the Amazon, attempting to fulfill a prophecy that was written before his birth. Now he's more than ready to get back to life as a typical teenager and spend some quality time with his girlfriend, P.J. Too bad the world has other plans. Wrenched away once more from those he knows and loves, Jack is thrust through time to the fiery deserts of the future and the frozen tundra of the Arctic, battling cyborgs, zombie warlocks, and scorpions the size of tanks. At least he has Gisco--everyone's favorite surly telepathic canine--to keep him company, not to mention the Ninja Babe, Eko. And he will finally be reunited with the parents who abandoned him so long ago, in order that he might save their dying planet. But it isn't only a race to save Earth. As the clock ticks down before the final confrontation with the dreaded Dark Lord, Jack must decide once and for all who he really is--prince of the future or humble human of the present--and choose between the two women who love him.

In this thrilling finale to the Caretaker Trilogy, the end of life as we know it has arrived, and history will be made--or lost--at the hands of one young hero.

WHAT IF THE MAN YOU'RE TRYING TO STOP IS THE ONE WHO'S TRYING TO SAVE THE WORLD? 'Provocative, important and very thrilling ' JAMES PATTERSON 'A gripping story . . . Klass can weave a tale like few others' DAVID BALDACCI 'Terrific. The plotting is impeccable' SUNDAY TIMES THRILLER OF THE MONTH 'A whale of a ride' OBSERVER ________ AN UNSTOPPABLE TERRORIST . . . For months, the FBI have been on the hunt for the 'Green Man'. BUT NOT LIKE ANY THAT'S GONE BEFORE. Each attack he launches targets global threats to the environment. ONLY ONE MAN CAN STOP HIM . . . Tom Smith is an FBI computer programmer, trained in spotting the patterns everyone else would miss. He's their last chance of stopping the terrorist's plans . . . BUT SHOULD HE? ________ 'A compelling cat-and-mouse chase' THE TIMES 'A top-notch thriller' WALL STREET JOURNAL