Welch Jim Welch 
Steven Stevens’ Killer App [EPUB ebook] 

It’s not as if Steven’s life at Islip Bay High was lacking excitement. His passion for technology had unwillingly got him into more trouble than anyone could have ever anticipated. But it’s not until the day a teacher is murdered in an execution involving a text message, an app, and a bomb, that Steven is accused and thrown into the adventure of his life. With only the help of his closest friends, he now uses his technological skills to investigate where no one else can and desperately tries to solve the mystery on which his life depends.