Duplicity

Skylar Rawlings knows how to keep secrets. She doesn't really have much of a choice as she attempts to save the planet from its next impending catastrophe, while fiercely avoiding the consequences of her last bout of global manipulation. The secret society of time-altering geniuses to which she belongs is under new, dual leadership. She hates one Eminence as much as she loves the other-two different kinds of problem-and she can't get them to work together. Skylar, as always, has a plan, but between the lies she tells everyone she knows, the lethal tactics of a new type of evil, and the terror that is her high school's musical, it seems that the universe is keeping secrets from her-namely, what she needs to do next.