Eleven-year-old ace detective Laura Marlin is back for her next exciting adventure in the fifth mystery from award-winning author Lauren St John. After helping to capture Mr A, the notorious leader of the Straight A gang, Laura Marlin is looking forward to taking a break from mysteries and relaxing on her school trip to Australia.But then Mr A escapes from prison and suspicious accidents start happening around Laura.Laura is sure that Mr A is out to get revenge on her.But will she be able to convince her friends that the danger is real before one of the accidents becomes deadly?