S06:É04 - S06:E04 - A Tale of Two Hamlets

At his family home in Upper Warden, arrogant actor Larry Smith is killed, when a summer house he walks in to as part of a promotion for the sequel to his hit film, The House of Satan, is suddenly destroyed in an explosion. His family quickly fling accusations for his murder directly at the residents of rival village, Lower Warden, leading Barnaby and Troy to determine if this is the case, especially when Larry's director, another member of the family, is electrocuted while using an exercise bike. It's not long before secrets, affairs and blackmail begin to surface from within the two villages.