It’s been only a few months since brothers Jack and George had their adventure in Camp 30, where they spied on high-ranking German prisoners of war. Now, they’re grateful that life has returned to normal. But their relief is short-lived when their mother is kidnapped by three thugs who seem to know all about the boys’ pasts.

Before they know it, they’re on a terrifying new adventure back to Camp X devising a plan to unearth a buried stash of gold for their mother’s ransom or they’ll never see her again. Will they succeed and will their mother be spared? Or will they all find themselves in mortal danger?

"...contains many of the elements that made previous adventures in this series so engaging."
"Readers who enjoy suspense and a fast-paced narrative will not be disappointed..."
—Quill and Quire