No Rest for the Wiccan (Bewitching Series #4)

Maggie O'Neill reluctantly volunteers to care for her bedridden, oh-so-perfect sister, Mel, but strange spirits threaten to divert her attention. Then a friend of Mel's loses her husband to a dreadful fall, and the police call it an accidental death. Maggie's not so sure, and sets her second sights on finding a first-degree murderer.