Black Moon. The McLaren Mysteries, #11

Each April the members of a mystery writing group gather on Stanton Moon for camaraderie and to fuel their plots. The moody area seems the perfect setting for hatching a whodunit. Unfortunately, an unscripted mystery materializes like an unsolicited manuscript on a publisher's slush pile-the leader of their group is found on the moor, her head bashed in and very dead. Lesley Keeton's murder takes on the aspects of a novel's first draft: the suspects shadowy and the killer unnamed.
Now, a year later, ex-police detective Michael McLaren is asked to tidy up the plot and expose the killer. McLaren investigates and discovers anger and jealousy cropping up as often as editor's red marks on a manuscript page. The group members crafted more than stories-they planned a mass exodus, fleeing Lesley's tutelage, dictatorship and tongue lashings. Add a tinge of blackmail, an illegal business and an affair to this framework, and the deadly combination has the earmarks of a bestseller.
In the midst of this, McLaren's lady friend arrives unannounced and disrupts the case.and unbalances his emotions. Both are tested one dark night in a churchyard when she stumbles into the arms of the killer.and McLaren must rescue her without letting evil go free.