2006: Three days since Oliver's disappearance, and with little information to go on, suspicion immediately falls on a known paedophile living in the area. With police protocol keeping Tony and Emily firmly in the dark, Tony is tempted when ambitious journalist, Malik Suri, comes forward with illegally obtained information on the suspect in custody. Then the suspect is released with a seemingly concrete alibi. A generous benefactor reaches out to Tony and Emily when they are at their lowest ebb, offering a financial reward for anyone coming forward with information relating to Oliver's disappearance. Present day: Tony's attempt to reopen the investigation gathers momentum as he and Julien finally find the first bit of solid evidence. While Tony continues on his mission to find out the truth about what exactly happened to his son, both Emily and Julien have to deal with problems in their own lives.
Elenco: David Morrissey , Keeley Hawes , Abigail Hardingham , Tchéky Karyo , Anastasia Hille , Roger Allam , Laura Fraser , Lia Williams .