Brittas is horrified to discover women's underwear in his office, and is convinced that a staff member is using the facilities to have sex. He segregates the sexes and bugs Linda; the evidence gathered leads him to Gavin. The real culprit is in fact Helen, who discovers Gordon unknowingly had sex with Carol at a fancy dress party. Simultaneously, Julie is being hounded by reporters for rescuing a dog from a river in the nude..