As Victoria's top homicide investigator, Darian Richards spent years catching killers. The crimes of passion, of anger, of revenge ... they were easy. It was the monsters who were hard.Someone was taking girls. At first he'd keep them a week then give them back. Darian warned that wouldn't last. It didn't. From then on, their bodies were never found. Girls kept disappearing. All they had in common was the fact they'd last been seen on a train.The...