Author: Rick Riordan 

Synopsis: 

Percy Jackson is back in this highly anticipated, brand-new adventure to follow the number one bestsller, Chalice of the Gods.

The original hero. A brand new adventure.

Percy Jackson has saved the world multiple times – battling monsters, Titans, even death himself – so graduating high school should be a piece of cake, right?

He earned his first one by retrieving Ganymede’s lost chalice. Now, to secure his second letter, Percy and his friends Annabeth and Grover must agree to a new challenge – pet-sitting for the goddess Hecate while she’s away over Halloween week. They just need to follow her simple rules:

1. Look after her pet polecat and mastiff like their lives depend on it (because they do)

2. Don’t touch anything – especially Hecate’s magic potions!

But when Grover’s curiosity gets the better of him, the friends find themselves with a giant goat, a destroyed mansion, and Hecate’s (terrifying and potentially deadly) pets on the loose in New York City.

Now the trio have twenty-four hours to find the pets and restore the mansion to order – or face the full fury of Hecate and her horrifying three-heads. It’s going to take luck, demigod wiles, and some old and new friends to hunt down the animals and set things right again.