A week on, and with no new leads, Laurie and Mal carry out a reconstruction of the events of that fateful day and this provides some surprising encounters. With baby Michael in danger, speculation is rife about the whereabouts of his parents. Laurie has an unsettling encounter with train driver Pat and starts to realise he might know more about the case than he first let on. Family tensions mount for Nusrat and Danny when they realise that their new visitor is hiding a very dangerous past.