Fin Macleod has returned to the Isle of Lewis where he was born and raised. Having left behind his adult life in Edinburgh, including his wife and his career, the former Detective Inspector is intent on repairing past relationships and restoring his cottage. His plans are interrupted when an unidentified corpse is recovered. Reluctantly drawn into the investigation, Fin uncovers deep family secrets even as he draws closer to the killer who wishes to keep them hidden.