Ask the Cards a Question (Sharon McCone Series #2) by Marcia Muller
There's trouble in Sharon McCone's quiet San Francisco apartment building. Madame Anya - with her cards, her tame crow, and her candles - had predicted evil for Molly Antonio. Linnea Carraway, drinking heavily and careening crazily in the wake of a divorce, had argued with her. Now the sweet, elderly Molly lies dead in her apartment. Linnea, last to see Molly alive, is the prime suspect and if Sharon means to clear her best friend, she has to find the murderer fast. Sleuthing out the small-time secrets of her quirky neighbors leads Sharon in and around the neighborhood, and, much to her surprise, to a shocking string of big-time deals and blackmail. Suddenly death is in the cards, threatening Sharon's oldest friendship, her professional credibility - and her life.