"Clayton Stumper might be in his twenties, but he dresses like your grandpa and fusses like your aunt. Abandoned at birth on the steps of the Fellowship of Puzzlemakers, he was raised by a group of eccentric enigmatologists and now finds himself among the last survivors of a fading institution. When the esteemed crossword compiler and main maternal presence in Clayton's life, Pippa Allsbrook, passes away, she bestows her final puzzle on him: a promise...

"Decades ago, Albert Einstein devised an equation that could benefit all life on earth -- or destroy it. Fearing what would happen if the equation fell into the wrong hands, he hid it. But now a diabolical group known as the Furies is closing in on its location. In desperation, a team of CIA agents drags Charlie into the hunt, needing her brilliance to help them find it first -- even though this means placing her life in grave danger. In a breakneck...

On an island nation in the Indian Ocean, the explorers venture through a vast underwater world and take part in a friendly robotics competition. But the tides of good fortune change quickly. Suddenly, Team Cousteau jumps into action to rescue a faculty member from the brink of death. Meanwhile, the team follows the Cruz's mother's clues to a magnificent tomb and center of spirituality precariously perched on the side of a cliff. There, Cruz is confronted...