In the novel Destination Unknown, Miss Janet Hetherington is a dour English traveler staying at the St. Louis Hotel in Casablanca. She has become acquianted with the American woman Mrs Calvin Baker there and also got to know Hilary Craven. After that the three ladies went to Fez.
Miss Hetherington later turned up at the Hotel Mamounia in Marrakesh, talking to Mr Jessop. Mr Jessop appears to be her superior.