A shop assistant had a knife pressed to her chin during a robbery at a convenience store in Salford, and all for just £20.
It happened at the Farmfoods store on Market Way, Salford, just after 7pm on 28 November 2012.
Police have now released two CCTV images of the suspected offender.
The shop assistant, a 38-year-old woman, was working when the offender came in posing as a genuine customer. However, he then grabbed the woman from behind and produced a knife which he placed under her chin causing a small mark.
He demanded the till be opened and grabbed just £20 in cash before fleeing in the direction of Brydon Close.
The offender is described as being white, about 5ft 10in tall, with a very pale complexion, in his mid-20s, of a slim build and with short black hair. He was wearing a dark tracksuit and a dark scarf covering the bottom of his face.
Police have now released a CCTV still of the suspected offender and are appealing to anyone who recognises him to come forward.
Detective Constable Paul Reynolds said: "Unless you yourself have been a victim of this sort of violent crime it would be impossible to imagine the distress this woman felt with a knife pressed to her chin - and all for just £20.
"That means we are looking for a very desperate individual who may strike again if he is so badly in need of money.
"I would therefore ask people, in particular shops and retailers in the local area, to look closely at the two CCTV images and if you think you see this man coming into your shop or business premise, then please call police immediately."
Anyone with information is asked to call police on 0161 856 5250 or the independent charity Crimestoppers, anonymously, on 0800 555 111.