The Minister is Murdered - Sedona Spirit Cozy Mysteries, #6

Be careful what you wish for. it may come true. When Bernie, Adam and their friends travel to the idyllic town of Heywood, Arizona, to witness a marriage, they never expected to find the officiating minister poisoned to death. With the Heywood sheriff being a novice to murder cases, she enlists Adam's help, and Ruby and Bernie decide to launch their own side investigation. Yet, with a near-death experience and a town populated by questionable residents with deep secrets, the killer remains elusive.
A series of explosive events will change Bernie and Ruby relationship forever. if they can catch the killer before he gets to Bernie first.