All of the murderers pictured here are currently languishing behind bars, with some due to serve decades more in custody before they can even be considered for parole.
Two of the defendants are currently serving a whole life term for their crimes.
Some admitted their crimes, while others were convicted following a jury trial at Sheffield Crown Court.
Here The Star takes a look back at some of the killings which have truly shocked Sheffielders over the years.
Some admitted their crimes, while others were convicted following a jury trial at Sheffield Crown Court.
13. Jama Ahmed
Jama Ahmed was locked up for life over the 'cold blooded execution' of 22-year-old Jordan Thomas in Sheffield in December 2014. Ahmed was sentenced to life behind bars and ordered to serve a minimum of 36 years over the killing, which was said to have been a revenge attack. Jordan was shot while he was the front seat passenger in a car which stopped at traffic lights on Derek Dooley Way, just before the Sheffield Parkway. It could not be proved that Ahmed was the actual gunman, and others involved in the attack were never tracked down, but he was convicted on the basis that he was part of the pre-planned plot to kill. The case against drug dealer Ahmed, of Broomhall Place, Broomhall, was that Jordan was targeted in revenge for the death of 23-year-old Mubarak Ali in 2011. Jordan's cousin, James Knowles, of Deer Park Road, Stannington, was jailed for 10 years for the manslaughter of Mubarak, who was stabbed to death on Mount Pleasant Road, Highfield, as part of a feud between rival gangs. Jailing Knowles, Mr Justice Openshaw warned that the murder could ‘further stoke feuding and rivalry’ between gangs in the city - and three years later Jordan was targeted. | SYP