Donald F. Averill – författare

Ten-year-old Millie Harris moved in with the Linfield''s at the Crafton, Maine, a lighthouse in 1952. Millie''s stay was temporary while her parents delivered a yacht to the Bahamas. Her half-sister, an FBI agent, told Millie her parents were kidnapped. A second yacht, nearly identical to the first, was to be sent with CIA agents to investigate. Millie wanted to help, but she couldn''t do it alone. She recruited Rocky Linfield to help, and they stowed away on the yacht. After arriving in the Bahamas, they received help from Pinky, a native Bahamian, who had helped the US Navy during World War II by watching for Nazi submarines. Suffering attacks with a grenade, flares, a scouting knife, and Rocky''s slingshot, the kidnappers were rounded up.

Ten-year-old Rocky Linfield and eleven- year-old Jerry Morgan met in the small coastal town of Crafton, Maine, in 1952. Both boys have lost their fathers in war and become best friends. Rocky and his younger sister, Susan, meet Mr. Waicukauski, who runs the lighthouse library. They give him a book containing coded information handed to them by a man who is killed on a highway. The Linfield children are visiting their grandmother, Martha Makler, an FBI retiree, while their mother is working in a parachute factory. The adventure takes the children and their families into the backwoods of Maine, where they are confronted by spies seeking data about the first US nuclear submarine.