Detective Superintendent Rob Vinson, Essex Police, speaks to Jonathan Wills and Emma Baker about the new leads they are now following after a BBC Crimewatch appeal for more information into a fire in Harlow, which killed six family members in October, 2012.
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A drug and alcohol abuse charity has warned a new law making psycho-active substances illegal won't necessarily solve the problem.
This weekend's show is the first to take place there since new rules came into force after the Shoreham aircrash.
The family of two little girls who were left paralysed following a crash say they will never forgive the driver who caused the collision.