Djuna and his dog, Champ, go to Stony Harbor to spend what he thinks will be a quiet and uneventful holiday in a seaside village. But little does Djuna know what is in store!
First he meets Billy Reckless and his dog, Alberto. Then there's the mystery that enshrouds Djuna's aunt, Patty. Things begin to happen! Djuna has a grand time with his newfound friend, lobstering, sailing, and exploring, until Aunt Patty's motorboat, the Patagonia, mysteriously disappears.
Ellery Queen, Jr. has created a likeable character in Djuna, the junior sleuth, not forgetting, of course, his black Scotty, Champ. Their adventures are told in clear, bright language, and they hold interest from start to finish.