Witchsong (The Gina Champion Mysteries #4)

Is there a serial killer at large in Blackwater Bay? Residents are fearful and the police are desperate. When they approach Gina Champion for psychic help on the case, she suspects that a black sorceress might be behind the killings.

Meanwhile, Gina has to cope with real life. It is the end of the year. Her boyfriend Dali is away for Christmas, and her older sister has come to stay, causing more trouble than she is worth. But if Gina doesn't solve the case quickly, she could be next on the killer's list…