The family of a woman killed by a firework in her house in Cornwall is backing a campaign aimed at preventing a similar tragedy.
Mary Fox, 59, died after a firework was put through her door by three teenagers on Bonfire Night 2009.
Police said three of her daughters had helped in the poster campaign, which shows pictures of her burnt-out home.
Three teenagers from the town were detained in May for her manslaughter and carrying out an arson attack.
Sgt Jared Connop, of the Devon and Cornwall Police Bodmin neighbourhood team, said the campaign aimed to "minimise the risk of such an event happening again to any other family, or in the local community".
Mrs Fox's daughters - Morwenna, Monique and Leonie - were invaluable in helping with the posters, he added.
He said: "I came up with some initial ideas, and their feedback was that it wasn't hard-hitting enough.
"It's a very difficult time for them. It's the first anniversary of her death coming up, and it's something that they just don't want to see happening to any other family.
"The message we're trying to get across is: 'Don't let this happen again, and don't let fireworks destroy your family'."
The campaign, named Operation Jackson, is also being supported by Cornwall Fire and Rescue Service and Cornwall Council.
The mother of nine died in her home in Wallace Road after being overcome by fumes and smoke from the firework which had set light to clutter in her hallway.
Her 17-year-old son, Raum, managed to escape the blaze by jumping from a first-floor bedroom window.
Two teenagers were sentenced to seven years youth detention over the fire and her death. A third was sentenced to five.