"Malcolm Edwards and his son Ralph are adventurers with ample means for following up their interest in jewel clues. In this book they form a party of five, including Jimmy Stone and Bret Hartson, boys of Ralph's age, and a shrewd level-headed sailor named Stanley Greene, they find a valley of diamonds in the heart of Africa."
It's not bad, but it could be better. For some reason it just didn't seem as exciting as I was hoping it would be. Then again, I could be more used to the wonder that Jules Verne incorporates into his work and the thrills that Sir Arthur Conan Doyle incorporates in his. All in all, not a bad read, but I'm itching for something more exciting.