Phyllis A. Whitney: Secret of the Spotted Shell

Secret of the Spotted Shell was published by Signet in September 1974 for Phyllis A. Whitney, prolific author of mysteries. Wendy was visiting her cousins in St. Thomas when she got caught up in an island wide mystery about the spotted shell which contains a clue that Wendy is determined to find!

We get a glimpse of the Caribbean in this cover by Allan Kass. Our heroine spies on a pirate while she leans against a brightly blue house! I like the iron decoration and the houseplant details.