The mother of a Kent schoolgirl who was stabbed to death in an alleyway 15 years ago has died without ever knowing who killed her teenage daughter.
The 16-year-old was stabbed more than 40 times in a random killing
Claire Tiltman, 16, was murdered in Greenhithe on 18 January 1993, while on her way to see a friend.
Her mother, Lin Tiltman, died of throat cancer earlier this month.
Her father, Cliff Tiltman, recalled how his wife's last thoughts were of the ongoing fight for justice and she told him: "Don't ever give up on Claire."
No-one has been charged with Claire's murder.
The Dartford Grammar School for Girls pupil was stabbed more than 40 times, in an apparently motiveless attack, four days after her 16th birthday.
On the anniversary of her death earlier this year, retired Det Supt Nick Biddis urged people with information to come forward.
Mr Biddis said: "There is somebody in that area, in the Greenhithe area, who knows something even now that happened 15 years ago, that should come forward."
A memorial plaque to Claire was mounted on a wall on London Road in Greenhithe - the road leading to the alleyway where she was murdered.
Another plaque is on a bench in a memorial garden 100 yards from her parents' home, while a road on a new retail development in Greenhithe was named Claire Causeway in her memory in 2002.