Adam Jonas was a bit of a loner, his love of trains and the tunnels that sliced through the Adelaide Hills brought about his undoing. His broken body was found at the bottom of a railway cutting leading into one of the tunnels. He became the third child who had gone missing in the hills, the other two had not been found either alive or dead. It had been over three months since the first boy went missing and at this point the Police had no leads on who may have been the perpetrator. The case had been assigned to two ageing Detectives, one nearing retirement, both came under fire from the press for their lack of progress in solving the case. The hills communities were now living on the edge. The two detectives under pressure to solve the case started to line up several Prime Suspects but on each of them they drew a blank. Their supervising officer comes under extreme pressure to relieve them of their duties. A new lead presents itself but where it ends is not as expected.