Other editions of book Hardy Boys 61: The Pentagon Spy

First valuable antique weather vanes are stolen in Pennsylvania Dutch Country and Frank and Joe are hired to catch the thieves. Meanwhile, their father is asked to find a missing Navy employee and a top-secret government document. What is the connection between the missing weather vanes and the Pentagon spy? The final chapters of this thrilling mystery uncover a stunning revelation!

Small-time crooks lead to big-time spies - and the Hardy Boys have no time to lose! While investigating the theft of several valuable Pennsylvania Dutch weather vanes, the Hardys uncover a startling twist in the case. The stolen weather vanes point directly to the nation's capital - and to a serious breach in national security! A classified document has disappeared from the Pentagon. Frank and Joe follow a trail of clues from Pennsylvania to Washington to the Chesapeake Bay. There they confront a ruthless gang of foreign agents determined to make off with top-secret plans for a vital nuclear submarine guidance system!