Seconds Away by Harlan Coben
This action-packed follow-up to international bestseller Harlan Coben's striking young adult novel, Shelter, follows Mickey Bolitar as he continues to hunt for clues about the Abeona Shelter and the mysterious death of his father - all while trying to navigate the challenges of a new high school. When tragedy strikes close to home, Mickey and his loyal new friends - sharp-witted Ema and the adorably charming Spoon - find themselves at the centre of a terrifying mystery involving the shooting of their classmate Rachel. Now, not only does Mickey need to keep himself and his friends safe from the Butcher of Lodz, but he needs to figure out who shot Rachel - no matter what it takes. Mickey Bolitar is as quick-witted and clever as his uncle Myron, but with danger just seconds away, it is going to take all of his determination and help from his friends to protect the people he loves, even if he does not know who - or what - he is protecting them from.