Charlie Thorne is a genius. Charlie Thorne is fearless. Charlie Thorne may have finally met her match. Charlie Thorne is used to being on the run. Ever since she was recruited by the CIA to track down Einstein's most dangerous equation, Charlie - and former CIA agents Dante Garcia and Milana Moon - has traveled around the world to prevent history's greatest discoveries from falling into the wrong hands. But after beating others to the secrets hidden...

Moving into an inherited mansion in Maine with their mother and stroke-afflicted father, three siblings uncover a mystery involving hidden passageways, family rivalries, and healing waters.

"Esther the fairy doesn't believe in magic. But fairies are all about magic, despite Esther's best efforts to reveal the science of their world. This time around, though, she's got her fairy pals Clover and Fig, along with trusty sidekick Albert the bird, to help create a more science-oriented entry for their school's "Magic Fair" -- Pixieville's magical answer to a science fair, which has never gone well for Esther before. When the local pond disappears,...