Cole and his friends finally reach the fourth of the five kingdoms, Necronum, land of the dead, where they confront unexpected dangers and meet new allies.

Adventure awaits in the Five Kingdoms-come and claim it in this start to a new series from the #1 New York Times bestselling author of the Fablehaven and Beyonders series. Cole Randolph was just trying to have a fun time with his friends on Halloween (and maybe get to know Jenna Hunt a little better). But when a spooky haunted house turns out to be a portal to something much creepier, Cole finds himself on an adventure on a whole different level....

When the hunt for his lost friends leads Cole Randolph to the kingdom of Elloweer, he and new friends Mira, Twitch, and Jace team up with the resistance movement to search for Mira's sister, Honor, but enemies abound and Cole and Mira must use a new kind of magic to protect themselves.

After Jason succeeds in finding a way back to Lyrian, he's immediately in more danger than ever. Meanwhile, Rachel and the others have made their own progress--as well as discovered new enemies. As the group ultimately rejoins, they strive to convince their most needed ally to join the war and form a rebellion strong enough to triumph against the emperor.