This is book number 29 in the The Boxcar Children Mysteries series.
The Aldens are on a cruise in the Caribbean! No sooner has the cruise begun than things start to go wrong. The ship’s radio breaks. It appears someone has fallen overboard — but it turns out to be a false alarm. And then there’s engine trouble! Is someone deliberately tampering with the ship? It’s a mystery — good thing the Boxcar Children are on board!
The Boxcar Children Series was created by Gertrude Chandler Warner, a teacher, when she realized that there were few, if any, books for children that were both easy and fun to read. She drew on her own experiences in writing the mysteries. As a child, she had spent hours watching trains near her home, and often dreamed about what it would be like to live in a caboose or freight car. In each story, she chose a special setting and introduced unpredictable, unusual or eccentric characters, to help highlight the Aldens’ independence and resourcefulness. Miss Warner lived in Putnam, Massachusetts until her death in 1979.