“On Linda’s return Christine easily arranged an outing together to Gull Cove. She then returned to her own room, took out from a locked suitcase a bottle of artificial suntan, applied it carefully and threw the empty bottle out of the window where it narrowly escaped hitting Emily Brewster who was bathing. Part II successfully accomplished.

“Christine then dressed herself in a white bathing suit, and over it a pair of beach trousers and coat with long floppy sleeves which effectually concealed her newly-browned arms and legs.

“At 10:15 Arlena departed for her rendezvous, a minute or two later Patrick Redfern came down and registered surprise, annoyance etc. Christine’s task was easy enough. Keeping her own watch concealed she asked Linda at twenty-five past eleven what time it was. Linda looked at her watch and replied that it was a quarter to twelve. She then starts down to the sea and Christine packs up her sketching things. As soon as Linda’s back is turned Christine picks up the girl’s watch which she has necessarily discarded before going into the sea and alters it back to the correct time. Then she hurries up the cliff path, runs across the narrow neck of land to the top of the ladder, strips off her pyjamas and shoves them and her sketching box behind a rock and swarms rapidly down the ladder in her best gymnastic fashion.

“Arlena is on the beach below wondering why Patrick is so long in coming. She sees or hears someone on the ladder, takes a cautious observation, and to her annoyance sees that inconvenient person—the wife! She hurries along the beach and into the Pixy’s Cave.