Under the Cold Moon by C. Jean Downer

Private investigator Sloane West knows that every murder begins with a lie. Vancouver Island harbors the darkest. Under a cold moon, a brutal murder occurs, and a boy vanishes. The RCMP suspects the child is the killer, but in Old Denwick, things aren't always what they seem. A battle has begun. An ancient demon and a sinister order of magicals is threatening everything Sloane loves. To find the boy and protect her coven, Sloane must rely on both her investigative skills--and a few new spells. Under the Cold Moon is the 2nd in the Sloan West Mystery Series. Don't miss the first Lies are Forever.