From dinosaurs to the burning of the Library of Alexandra--this thrilling, visually dazzling new series from Matthew Loux is posed to conquer the 21st century.

The internship program at the Time Museum is a little unusual. For one thing, kids as young as twelve get to apply for these prestigious summer jobs. And as for the applicant pool . . . well, these kids come from all over history.

When Delia finds herself working at the Time Museum, the last thing she expects is to be sent on time-traveling adventures with an unlikely gang of kids from across the eons. From a...