Four in a Bed - Season 4 Episode 1 Knock Castle
Overview: The first to host are father and son Chic and Jason Henderson, who welcome their fellow competitors to Knock Castle in Crieff, Scotland. Their rivals are generally knocked for six by the castle, but the rooms fall short for tech-heads Graham and Lisa Ellis and there's a 'pointed issue' in Ben Turpitt and Keri Remes' boudoir.