Plot summary

The Hardy Boys help their detective father, Fenton Hardy, search for a famous rocket scientist whose disappearance endangers the launching of the Firebird Rocket. They are threatened multiple times, but still do not give up with their lives at risk. Frank and Joe Hardy aid their father and others. However, they soon learn that they are working for a criminal.

• Publication date: 1978
• Ghostwriter: Vincent Buranelli
• Summary: Fenton Hardy enlists his sons to search for a missing rocket scientist in Australia.