ON FRIDAY, September 3, 1999, 17-year-old Raonaid Murray made her way home from a night out in Dun Laoghaire town centre.
She was last seen alive around 11.20pm that evening.
Just a day later, at 12.33am on Saturday, September 4, Raonaid's lifeless body was discovered at Silchester Crescent in Glenageary.
She was less than 500 yards from her front door.
A beloved daughter full of potential and hopes for the future, her murder has remained unsolved for 20 long years.
Now her family are renewing their appeal for information as part of an ongoing Garda investigation which remains ongoing at Dun Laoghaire Garda Station.
In a bid to help their efforts, Raonaid’s family have issued an audio file appealing for help to try and find the murderer of their "beautiful child" who "died on the pavement with no loving, caring person there to help her, comfort her".
Gardaí said: "Many who were then Raonaid’s age are now parents themselves with children, some of which would now be close to Raonaid’s age, and we would ask them to reflect now with the benefit of maturity and hindsight on any information which may be of assistance to the investigation.
"Despite a large number of suspects having been identified during the course of this investigation, there is, in reality, no prime suspect.
"The lack of a prime suspect arises from the fact that there has been no motive identified in this case. In over 3400 witness statements there is not one word of enmity towards Raonaid."
Officers are appealing for anyone with information which could help them identifying a motive for the murder or anyone who may have doubts about the veracity of any alibi already provided.
They warned: "You may be unknowingly shielding a killer."
Anyone with information is being encouraged to contact the Garda Incident Room at Dun Laoghaire Garda Station, phone 01-6665000 / 6665012 or alternatively the Garda Confidential line at 1800 666 111 or any Garda Station.
A reward for critical information received is also available from Crimestoppers. Which can be accessed by the Freephone number 1800 25 00 25.
