Book Four is in the making. In it, we will see Howard Hughes on the scene to lure Nick Grant into another adventure.
In MISSION: HUGHES H-1, the Japanese intelligence services remain active in California and have a new partner, the Third Reich.
Agents from both countries team up in their most ambitious plan yet to steal Hughes' H-1 secrets. It's up to Nick, Nancy, and Leilani to turn the tables and retrieve the stolen American secrets.