Emil and the Detectives by Erich Kastner
'Password Emil!' Emil is excited to be taking the train on his own for the first time. He doesn't like the look of his fellow passenger, the man in the bowler hat. Emil will just have to keep his wits about him and his money in his pocket. But Emil falls asleep and when he wakes up the man in the bowler hat is gone - and so is the money! Emil is determined to get it back. He teams up with a gang of young detectives and so begins a hair-raising chase across Berlin to catch the dirty rotten thief... BACKSTORY: Learn all about the book's brave author and find out just how good a sleuth you would be.