At a Christmastime family reunion in England's Lake District, mathematician and inventor Henry Rathbone investigates an accidental death that, upon second glance, does not seem so accidental.
When a peaceful weekend party at a posh English country manor house is ruined by a mysterious death, Lady Vespasia Cumming-Gould--from the best-selling Thomas Pitt series--takes on the role of sleuth to investigate the crime.