The Society of The Unwanted, (Paperback)

Harley, Melissa, Adam, and Kai are no ordinary twelve-year-olds. They're detectives. Deep-digging, perceptive, and always willing to find the truth, they are far more capable of solving mysteries than their principal, Mr Westman... until he bans them from school detective business. But, when a masked figure arrives before dawn to present each of them with a mysterious parcel, the children must use their deduction skills to track down the sender. At an abandoned science lab, the four learn there's more to their talents than observation. People are missing, and it's down to Harley and her friends to rescue them. Can they prove to Mr Westman that they're worthy detectives?