Farid takes a bigger role in Michael's life and prepares to take over from Nick as his surrogate father.
Breakthroughs finally throw light on the identities of Lola and Michael and a girl who could be Michael's mother is arrested, and Lola returns.
Laurie, Mal and the team have little success in finding out what happened to Lola and stage a reconstruction to find new leads.
Mal is cynical about any connection between the suicide victim and the abandoned baby.
A baby is abandoned in the local hospital and a young woman throws herself off a bridge right into a train's path.
The discovery of a burnt-out van reignites the investigation; police stake out Hazel's home; Amy attends her retirement party.
Matt argues with Leanne's parents after a TV interview; Matt and Sarah make a grisly discovery.
Leanne's disappearance turns into a murder investigation; Matt becomes the subject of police scrutiny; Matt and Farnes make a disquieting discovery.
Matt learns that his missing wife is pregnant; Hazel suspects her son may have been involved in the abduction.