Deistvie romana "Moia kuzina Reichel" stroitsia vokrug zagadochnykh smertei, prichinoi kotorykh stala vsepogloshchaiushchaia strast i nenavist. Volshebnoe, nevyrazimo prekrasnoe vossozdanie legendy o Tristane i Izolde, no uzhe v obstanovke Kornuolla 19 veka.