Sharkey fire murders: Police to make Crimewatch appeal
The murder of three members of the Sharkey family in a deliberate house fire in Helensburgh is to be featured on the BBC's Crimewatch programme.
Detectives investigating the case hope the appeal will provide further information to help them trace the person responsible.
Thomas Sharkey, 21, and his eight-year-old sister Bridget died following the blaze at their home on 24 July.
Their father Thomas, 55, died six days later in hospital.
The only survivor of the fire was his 46-year-old wife Angela Sharkey.
The fire at the family home in Helensburgh's Scott Court broke out at about 05:00 on 24 July.
Police and family members have made several appeals for information, but so far no-one has been arrested over the murders.
Det Supt Peter McPike said: "We have yet to establish a motive for this crime and are following a number of lines of inquiry, however, we are hoping that the Crimewatch appeal will provide that vital piece of information which could help us take our inquiry forward."
The Crimewatch programme on Thursday night will also include images from inside the flat and further unreleased images.