In their ancestral home in the South Carolina Low Country, teen twins, Aislinn and Audrey, have seen their share of ghosts. Now, Landon, the four-year-old they baby sit, has seen a ghost, or maybe a mummy. A boy and girl from their new school have been kidnapped. Their father's long-dead hero has returned to balance karma. Two murder victims seek justice. The Deckers have disappeared.
They all expect Aislinn and Audrey to harness their evolving powers and save them. Donovan, the cute ghost who has a room in their attic, should be helping, but he's too busy with his invisible teachers, doing things he can't tell mortals about. The only living being who can tell them what they must know, is a tree. Grandmother Magenta is teaching them as fast as she can, but new powers manifest faster than they can learn to use them. A murderer has his eye on them.
The Low Country is a perilous place for teenage twins who can see its ghosts.