Church Deacon Kat and her friend Beth, known as Mouse, have started a private investigation business in the sleepy village of Eyam.
Kat, whose estranged criminal husband, Leon, is on the run, has a lot on her plate running the new business whilst heavily pregnant.
When a widow asks the sleuths for help, Kat and Mouse find themselves searching for the birth mother of the widow’s husband. But when it becomes clear that the widow isn’t telling the whole truth, Kat and Mouse are drawn into a deadly chase where nothing is what it seems.