Books for Teen Boys who like Spy / Secret Agents & gadgets
Looking for suggestions for my son. He started reading secret agent / spy books in elementary with the Zac Power series by H. I. Larry. He's finished the Alex Rider series. He's read all the 39 clues books as well. Any recommendations along those lines for a young fellow with those interests? As more of a fantasy fan, I'm not real familiar with that Genre.