Nico Di Angelo and his half-sister Hazel take center stage in this exciting read, set in Camp Jupiter. Together with Will, they try to stop a mysterious dark force that punishes monsters for their past. After their return from Tartarus, some monsters have escaped to Camp Jupiter. When monsters start disappearing, it becomes clear that something dark is going on. Hazel discovers an important secret about herself and the dark force, giving the story added depth.
For children from around 13 years old.
(A younger-reader fantasy adventure)