Dudley is in bed with a broken bone in the ankle following an abortive attempt at disco dancing on roller-skates. It could have been his neck, if he hadn't landed on the fat Miss Bunting. Meanwhile, Susan is job hunting, and her father finds one for her in the local newspaper for a dentist's girl Friday. He writes the telephone number down on a piece of paper, but Susan inadvertently rings Duncan's number which is written on the other side, causing his secretary, Marlene, to resign. Dudley takes a stab at 'spot the ball', and receives a bank statement which shows £75,000 in his and Muriel's joint account.