Whilst investigating a routine 'cheating wife' case, Jackson is caught up in a terrible train accident that brings yet another lost little girl into his life. This sets off a series of seemingly unconnected events that will have a far greater impact on his life than he realises.

Jackson is released from jail, his arrest having triggered a connection with the Joanna Hunter case. But will he be able to find her before something really bad happens? Meanwhile, Marcus has become caught up in the cheating wife case that Jackson just can't shake.