Axel and the team get more than they bargained for when they settle into their new home outside Las Vegas. A surprise attack results in Brodie, Ebony, Dan and Ferdy being taken hostage and held in a secret location by cult leader, Jeremiah Stead. Stead wants their help in opening an encrypted device called . If they refuse, it'll cost them their lives, but agreeing to Stead's demands will mean handing over control of a Axel and Chad can find Stead, but it means they have to break his brother out of prison. And it's not just any prison. It's the -Yodak prison in North Korea, a place filled with modified humans who have powers. The Doomsday Device is the latest adventure in the Teen Superhero adventure series. It combines , and . If you like , then you'll love Darrell Pitt's page-turning book.