The apeman's secret
- London : Diamond Books, 1986
- 571 p.
- The Hardy boys .
Three in one. Title 1: The Apeman's secret. -- Title 2: The mummy case. -- Title 3: the mystery of smugglers cove. A "monster" who terrorizes Bayport and a girl who runs away to join a cult are the subjects of the Hardy boys' sleuthing