It's a crime which wrecks lives and tears communities apart.
The use of knives is continuing to cause havoc across Britain, with young people in particular caught up as victims and perpetrators.
This week is National Knife Crime Awareness week, which has seen police forces up and down the country launching campaigns to tackle the rising problem.
Figures from the Office for National Statistics show there were nearly 35-thousand knife-crime offences last year in England and Wales - the highest since records began.
Watch Cary Johnston's report, where Wiltshire Police have set up a special knife amnesty for anyone to dispose of illegal weapons:
Knife crime is on the rise.
These weapons below are part of a haul of knives seized by police - all of which were either illegally owned, or brandished.
Although some of the increase in knife crime statistics can be put down to better recording and greater awareness, police say they're determined to tackle the problem head on.
Assistant Chief Constable Gavin Williams, Wiltshire Police:
As part of a national campaign called Operation Sceptre, Wiltshire Police have installed special knife Amnesty bins in Police stations across the County - and they say there'll be no questions asked.
Sergeant David Tippets, Wiltshire Police:
Even in a comparatively low knife crime region like Wiltshire, police say there's no space for complacency.
In January this year in neighbouring Oxfordshire, 16 year old Harum Jama died after being found stabbed at Friars Wharf in central Oxford. His killer has yet to be found, despite an ongoing police investigation, and later an emotional plea from his mother.
Hibo Fidow, Harum Jama's mother:
Anyone caught in possession of an illegal knife can face up to four years in prison, while those convicted of using them to attack someone, can face a minimum jail sentence of ten years.
It's hoped the Knife Amnesty campaign will help to take hundreds of weapons off the streets, and to deter those who would otherwise use them.