Police have released an efit image of a suspect wanted after a couple had boiling water poured on them during a two-hour raid at their home.
The victims, aged in their 60s, were tied up and attacked by three men at their property off London Road in Halstead, near Sevenoaks, Kent, just after 9pm on 26 April.
The couple suffered serious burns from having boiling water poured on them as their attackers demanded money, Kent police said.
A group of businessmen have reportedly put up a £20,000 reward to help catch the raiders.
Both victims remain in hospital, and the woman is said to be in a critical condition. Officers have now released a computer generated image of one of the suspects.
Sgt Simon Harrold of Kent police’s serious crime unit said: “Although the suspects tried to conceal their identities, we have been able to get a very detailed description of one of the men.
“We are continuing to follow a number of lines of inquiry to find the people responsible for this shocking crime, and I would urge anyone with any information, no matter how small it may seem, to get in touch.”
The man in the image is black, of stocky build and medium height, with short cropped hair. He is in his 20s, and believed to speak with a London accent. He wore dark clothing during the attack.
Anyone with any information should call the west Kent appeals line on 01622 604100, quoting reference YY/8810/16.