Police get a breakthrough when something was found dumped near the Shakoor family home, eleven days after the fatal house fire.
The discovery means the fire is now officially a murder investigation.
As enquiries increase there's a problem, which could provide a reason why this case remains unsolved.
Written and produced by Gabby Colenso Presenter: Sonia Watson Sound Design: John Cameron-McIntosh Story Consultants: Barney Rowntree and Ben Robinson Online Producer: Rachael Smith Series Editor: Shahid Hussain Commissioning Editor: Alistair Miskin
A BBC Essex production for BBC Sounds.