An action-packed, mythological chapter book series from Tony Abbott!
Owen, Jon, and Sydney managed to rescue Dana from Hades' underworld...for now. But if they don't fulfill their end of the bargain with Hades, she might be headed back to the underworld. Forever.
As if that wasn't bad enough, some very creepy, very one-eyed mythological beasts have escaped from the underworld. The Cyclopes have taken over the power plant in Owen's town. If someone doesn't stop them, they're going to bring back all sorts of horrible creatures...
Stopping the Cyclopes is exactly what Hades wants Owen and his friends to do. But what chance do four kids stand against an army of mythological monsters?