The Firebird Rocket

The launching of the Firebird Rocket is endangered when a famous rocket scientist disappears without a trace on his way to the Woomera Monitoring Station in Australia. Assigned to the case, Fenton Hardy tells his sons he needs their help. And Frank and Joe must turn down a request that they find the missing son of a prominent senator. The search for the scientist begins at the Princeton Space Laboratory, where the boys realize they are being hunted by an unknown adversary. Clues lead them to Australia, and again they are followed. Then suddenly their lives are in danger! Someone in an…