506寝室的灯灭了以后第三部The unveiling of a newly-discovered novel by deceased Midsomer crime-writer George Summersbee at the Luxton Deeping Crime Festival is jeopardised when the manuscript is stolen and a woman is fatally electrocuted by a booby-trapped roulette wheel. Can new dad Barnaby untangle a web of jealousy and obsession to find the killer?