|The Submarine Caper|
|Cover artist||Paul Bachem (1989)|
|Publisher|| Wanderer Books|
|Series||The Hardy Boys|
|Preceded by||The Outlaw's Silver|
|Followed by||The Four-headed Dragon|
- "What bone-chilling mystery lies buried in the deep, dark cavern, underground"
- — Tag-line, from 1989 printing
Frank and Joe Hardy are in Germany, to visit an investigative reporter, named Gerhard Stolz, who has asked for their help following-up some leads. The plans of a top-secret mini submarine have been stolen, and a collection of long-lost paintings, just recently rediscovered, have gone missing.
It's up to the Hardys to uncover the truth, but after a deadly high-speed chase down the Autobahn and nearly getting killed in the minisub, they soon come to realize that two mysteries may be more then they can handle.
Businesses and organizations
- Conrad Fuchs wrote the original manuscript of this story in German. It was then translated by Lilo Wuenn.