Script by Jonquil Antony
Last week the Dales started their holiday in Cornwall. Mrs. Freeman and Mrs. Morgan at home in Parkwood Hill, met Mrs. Mountford who frightened them with lurid stories of burglaries and violence. That night, while Dr. Morton was out on a case, they heard someone in the house and barricaded themselves in Mrs. Freeman's room. The burglar turned out to be Captain, Mrs. Freeman's cat. Isabel Fielding turned up suddenly at Trevallion and announced that she was staying at the Cliff Hotel. Mrs. Dale was most upset because she was afraid that Isabel would make Gwen dissatisfied again. While Dr. Dale, Bob, and Gwen were out fishing in a small boat, a thick sea mist came up; when they did not come home to tea. Mrs. Dale became very worried and lost her temper with Isabel, who was talking again of taking Gwen to France. They made up their quarrel when Isabel proved to be a tower of strength while they were waiting for news of Gwen, Bob, and Dr. Dale, who were eventually found by Watson and brought back to safety. Isabel Fielding left Trevallion the next day.