With Ruby due back tomorrow, Sam and Rachel decide to make the most of their last day alone together, however things take a turn for the worst when poor little Archie has an accident and needs to go to hospital. He's grand though but when Sam is alone with the doc, he makes a pretty grim discovery which puts his whole relationship into question… Elsewhere, Pete struggles with his jealousy over Ross as Debbie tries to assure him that he is all she wants.  Yeah, sure, we believe you Debbie....