To have a loved one murdered to death is a horror families never recover from.
To be robbed of a future with a son, daughter, brother, sister, grandchild, partner, mum or dad haunts loved ones for the rest of their lives.
But what adds to that gut-wrenching pain for some families is the sense of injustice, knowing that the killers of their loved ones are still roaming the streets...and free to strike again.
There are a number of unsolved Sheffield murders, for which nobody is behind bars.
We examine nine such cases here where killers seem to have gotten away with it so far.
However, cases are regularly reviewed by South Yorkshire Police and information can still be passed on because however small or insignificant you may think it is, that could be the missing piece of the jigsaw and exactly what detectives need to solve a case.
Information can be passed on by calling South Yorkshire Police on 101 or Crimestoppers, anonymously, on 0800 555111.
There are a number of unsolved Sheffield murders, for which nobody is behind bars.
9. Dawn Shields
Dawn Shields, aged 19, disappeared after getting into a car in Broomhall – Sheffield’s red light district at the time - on Friday, May 13, 1994.
Her body was found in a shallow grave a week later on the slopes of Mam Tor, Castleton, in the Peak District.
The mum-of-one, from Pitsmoor, became involved in street prostitution at a young age and plied her trade to support herself and her 11-month-old son at the time of her death.
Her naked body was found by a National Park warden buried in a shallow grave under some rocks.
She had head injuries and had been strangled. Photo: National World
Safrajur Jahangir was shot dead when he pulled up outside a house to deliver a takeaway in August 2009.
He drove to Scraith Wood Drive, Shirecliffe, to deliver a takeaway order placed at his business - the Spice Hut on Middlewood Road, Hillsborough, - and was killed by a gunman said to have been lying in wait for the 23-year-old.
Police believe a bogus food order was placed to lure Safrajur, from Darnall, to the street where he was gunned down. The shooting was described at the time as an ‘organised hit’.
Six men went on trial in 2010 accused of conspiracy to murder, with detectives believing they were all involved in a pre-planned plot to kill.
It was claimed that a hitman had been paid £15,000 to carry out the shooting but that he later died of a heroin overdose before he could be charged.
The police probe focused on a feud between two Asian families in Sheffield, believed to have been at the heart of the killing.
But the trial of the suspects accused of planning the murder collapsed in what was called a 'disaster for the criminal justice system'.
A seventh man, who was also charged over the murder but deemed unfit to stand trial, was also found not guilty.
The trial was halted when it emerged that South Yorkshire Police failed to disclose to the defence teams all the evidence gathered by the force during the investigation, which was said to have denied the defendants the right to a fair trial. Photo: National World