"The Vespers have crossed a line. Amy and Dan were devastated when the Vespers kidnapped seven Cahills around the world, holding them hostage until Amy and Dan delivered an impossible ransom. But at least the hostages were Cahills - members of the world's most powerful family, trained to face all odds. Now the Vespers have gone too far. They've kidnapped Atticus, an innocent 11 year old boy and Dan's only friend. Now Dan and Amy are in the struggle...

After Marco's betrayal, Jack McKinley and his friends must face their own demons and engage in a battle with foes long gone.

Jack and his friends desperately search for the rest of the lost Loculi and confront the armies of Artemis in order to rescue Aly, who has been pulled back into Atlantis by King Uhla'ar.

A father and his sons embark on a perilous trek to the ends of the earth It is May 1909, and the race to the South Pole is on. For years, Jack Winslow has dreamed of conquering the frozen wasteland, but just before he sets sail, his wife dies suddenly. Rather than cancel the voyage, he brings his two grief-stricken sons, Colin and Andrew, on the adventure of a lifetime.   Although the teenagers have read widely of the Antarctic and the icy, unforgiving...

When thirteen-year-old Max Tilt stumbled across his great-great-great-grandfather Jules Verne's unfinished, unpublished manuscript, The Lost Treasures, he thought he had the answer to all his problems, but nothing in life is ever that easy. With his mom's illness getting worse again, Max needs to figure out a way to save his family--now more than ever. So Max and his cousin Alex revisit The Lost Treasures, and they find a clue that just might be the...