Never Laugh as a Hearse Goes By by Elizabeth J. Duncan

Penny accompanies her friend, DCI Gareth Davies to a conference at Gladstone's Library for the clergy of the Church in Wales.  When the secretary to the bishop, Minty Russell, discovers the secrets of some of the attendees and begins to blackmail them, it's no surprise that she ends up murdered. Allergic to shellfish, Minty is exposed to fish and her EpiPen has mysteriously disappeared from her purse when she needs it most. When another person is murdered, the police investigation goes into high gear.  Penny, aided with information from Davies, attempts to solve both crimes.  In this fifth book in the Penny Brannigan series, Duncan writes another cozy, enjoyable book. It will be published next month.