At midsummer the Cornish villagers of Trevennick dance around bonfires and make offerings to the river. It’s not the sort of thing that appeals to Audrey Delaney, who is very much a city mouse. But when her (sort of) boyfriend Noah whisks her away on a surprise trip to the West Country, she’s determined to do the best she can to enjoy herself, if that’s what it takes to remove the question mark from their relationship. Then their first night ends in tragedy, and Audrey finds herself embroiled in a police enquiry and unsure who to trust. She’ll have to untangle the mysteries of this insular community quickly, though, because people are dying fast.