When 17-year-old Dharma Moore moves to Bayou country so her scam-artist mother can work as a Paranormal Investigator, she discovers that more than ghosts haunt the abandoned plantation they now call home. Centuries ago, a voodoo curse was placed on the swamp waters surrounding the old plantation by a murdered slave. This terrible curse ensnares Dharma with its deadly effects. To save herself, she must face the terror of the haunted waters, find the dead woman's skull, and convince the slave's soul to release her from its torments.
When Angus MacBain finds that a Sea Hag has cast a deadly spell on Vanora's father, he must once again set aside his life in the outside world to plunge into danger to save his friend's father. But when he seeks out Fane, advisor to the MacBain Kings, Angus discovers that Vanora's father is not the only one in dire peril. Now with two souls in mortal danger, Angus and Vanora must face the unknown challenges of Fingal's Cave alone this time - without the aid of his trusted advisor.