In a strange turn of events two twin brothers die within days of each other - both in suspicious circumstances.
Hilary and Hugh Evenett have led a seemingly quiet and uneventful life in the sleepy town of Farthing-on-Hone. Inseparable and devoted to one another, they have resided together at their grand home, Marsden House, with their elderly step-mother and step-sister for the majority of their adult lives. Practically recluses, there is no obvious reason for the double murder - except perhaps for the matter of their substantial estate.
The lives of several inhabitants are put under scrutiny as investigations are held into their untimely deaths. Could it be Mable, the trusty maid who has served them for decades? Perhaps their blind step-mother has plotted their demise with the help of an accomplice? Maybe Miss Morley, their rather odd step-sister, wants Marsden House for herself? Or could it even be Mr Pulsey, their solicitor, trying to get his hands on their fortunes? As the question of who killed the Evenett twins goes unanswered, the list of suspects continue to grow. Will the culprit be found before they have the opportunity to strike again?