The Moon-Spinners was made into a movie by Walt Disney in 1964, starring Hayley Mills as Nicola. Peter McEnery played Mark, apparently giving Mills her first on-screen kiss. The movie received mixed reviews and didn't do that well in the box office. But for light-hearted fun, it's a pretty entertaining movie.

The book's Cretan setting and a few story elements are evident in the movie, but Disney took plenty of license with the plot, as you can see from their description:

"Start with a fortune in stolen jewels. Add a dash of danger. A pinch of romance. Season with Hitchcock-like intrigue and comic flair. What do you have? A mystery thriller for the whole family ... with the Disney touch. Set against the sun-bleached beauty of the Isle of Crete, the story pits a young English tourist (Hayley Mills) against a wily Greek jewel thief (Eli Wallach). Mistaken identities and perilous escapes -- including a nail-biting battle with a windmill -- lead the junior-miss detective to a final confrontation aboard the yacht of an eccentric millionairess (Pola Negri) with a passion for priceless gems and pet cheetahs!"

Visit The Moon-Spinners' imdb page.

The movie was released on DVD recently and is available.