An exploration of the Met’s investigation into Sarah’s murder, how this devastating crime unfolded and its impact. Told by those closely involved in the case from the outset, many of whom are speaking on camera for the first time, including the Senior Investigating Officer, the Prosecuting Barrister and Sarah’s local MP.

• BBC Studios Documentary Unit
• George Eustice
• Jess Phillips
• Cressida Dick
• Matt Hancock
• Clive Myrie
• Ben Shephard
• Kate Garraway