Mary F. Burns. The Tarot Card Murders: The Second West Portal Mystery (2009) 150 pp.
Publishers description: A mysterious secret from twenty years ago...Tarot cards left on the doorstep...and murder all add up to new excitement and challenge at Halloween for Cynthia Montrose and her two lovable English bulldogs Roscoe and Kiwi. And Cynthia continues to get crosswise with her ex-high school boyfriend, Detective Leonard Vlainich, because shes always in the middle of whatever criminal activity happens to land in the otherwise peaceful neighborhood of West Portal, just west of Twin Peaks in San Francisco.
Setting: San Francisco (West Portal)