Graham's Charlotte

When a mysterious stranger gives Mads Riley a cell phone that knows everything, her life changes forever. Mads has the power to unlock the secrets of the universe-past, present and future. The phone predicts earthquakes, tells her what's on the other side of a locked door, and even reveals the trick to get out of last night's math homework. Mads is soon asked to use the device to break into the most heavily defended spy agency in the world. She's told it's the only way to save her mother's life. Will her mission save someone she loves, or is she betraying the country that her father died for?