The mother of a Lincolnshire man who died after being tortured for several days has made an appeal for information a year after his death.
Alan Wood, 50, died at his home in Lound, near Bourne, in October 2009.
Three men suspected of involvement in the killing have been questioned but were released on police bail, Lincolnshire police said.
His mother Pauline Wood said she believed someone must have information about his death.
Mr Wood was last seen alive at 21 October at his local pub the Willoughby Arms in the nearby village of Little Bytham.
He failed to turn up to work at Sainsbury's supermarket the following day and his body was discovered by a worried colleague two days later.
Police said Mr Wood had been tortured for several days and was found with his throat cut and severe injuries to his head.
Mrs Wood said: "I find it difficult to believe nobody knows who did it. I just hope there is nobody out there who is hiding him.
"Some days are better than others - some days I can get through without upsetting myself but sometimes I find it very difficult."
Police said Mr Woods' bank card was used in the days before his death and he may have been tortured to get a PIN number for his cards.
His death has been the subject of several appeals, including one on Crimewatch, and a £60,000 reward has been offered.
Officers have said Mr Wood, who lived alone in a small bungalow in a remote area, had no known enemies and described him as a "gentle, kind and well-liked" man.