Hidden in the small town of Xanadu, Wyoming, there is a top secret menagerie filled with mythical creatures like unicorns, dragons, and phoenixes. For centuries, Zoe Kahn's family has been responsible for keeping the Menagerie guarded from the outside world. But six griffin cubs have just escaped—and if they can't be found, the Menagerie will be shut down.

Now it's up to Zoe and her classmate Logan Wilde to get the missing cubs back. But the real mystery remains: Is someone trying to sabotage the Menagerie

Who let the griffins out . . . and why