Greater Manchester DCI Kay Harris is haunted by the memory of her sister's recent suicide. Concerned for her mental health, her superiors push her into taking some time off. Kay retreats to her family's holiday home in the Scottish Highlands, taking with her, Ava, a young woman she prevented from committing suicide.
Wimpeney is a former mental health nurse and qualified psychotherapist, and used her experience in writing this thriller. The subject matter is fairly heavy, including issues around expectations of women in the workplace, bullying at work, mental health support and trauma recovery, but the book is lightened by a good sense of humour.
As a birdwatcher, I liked the frequent bird based similes that Kay used to describe things, eg "Their phones rang intermittently, like robins marking territories". I was disappointed that this disappeared from the book quite quickly, though perhaps that was a deliberate attempt to add to the sense of Kay's deteriorating mental health.
It's an engrossing read, though slightly uneven (and perhaps could have done with better editing). Definitely worth reading if you're interested in the issues.
Disclaimer: I won this book in a competition on Twitter.