 The Trotters return to the mansion a week later to clean the chandeliers, though the Lord and Lady are away on holiday.Grandad goes upstairs to unscrew the holding bolt for one of the chandeliers while Del and Rodney climb up on step ladders with a blanket ready to catch it.However, unbeknown to Del and Rodney (and the audience), Grandad is actually loosening the bolt for the adjacent chandelier.