The Mystery in San Francisco

The Aldens are traveling to San Francisco to visit their Aunt Jane and Uncle Andy. While exploring the sights of the city, they visit Fisherman's Wharf and are invited aboard a fishing boat by their friend Charlie. However, they soon discover strange occurrences on the wharf and signs of sabotage on the fishing boats. It appears that someone is trying to prevent Charlie from catching any fish. The Boxcar Children must work together to solve this mystery before it's too late.