Trouble Undercover (Brown Chapter Reader)

Dev loves cracking codes, but he never expected to crack a code and enrol in a school for spies! He loves his new school, where he learns about disguises and gadgets. When the headmasters calls him and his friends, Anya and Mo, to their first mission, Dev can't wait to prove himself. But things don't quite add up... can Dev figure out what's really going on?