Damon and Gizzmo play a trick on Karen and Susi while they are sunbathing. Bobby persuades Sheila to take a holiday in Anglesey. Petra returns home from the shops, packs a suitcase, and leaves home.

Gordon reveals that Lucy is staying at Janice's. Mr Johnston thinks Heather is a secretary, then discovers that she is his accountant. Marie is convinced that Petra will come home.