Police have appealed for help to find a convict who absconded from an open prison near Dundee five months ago.
Hutton attacked his mother's boyfriend with a spanner
A warrant has been issued for the arrest of Terence Hutton, who failed to return to Castle Huntly after being granted a temporary release licence.
The 37-year-old was serving a five year sentence for attacking a man he believed had raped his mother.
Police believe he may have gone to London, but said he had friends and family in Dunfermline and Edinburgh.
Hutton went on the run in May this year, four months after being transferred to Castle Huntly from Edinburgh prison.
He was locked up in March 2006 after being convicted at the High Court in Edinburgh.
Hutton, from Dunfermline, had admitted attacking John Millar with a scaffolding spanner while he slept.
His trial heard he had believed, wrongly, that he was avenging his mother's rape.
The victim, who was having an affair with Hutton's mother, was left with a fractured skull, broken cheek, leg and wrist.
Hutton was originally charged with attempted murder, but pled guilty to a lesser charge of assault to the severe injury, permanent disfigurement and the danger of life.
Hutton is about 5ft 8in tall, with short brown hair and blue eyes. Tayside Police said his specific whereabouts were still unknown, despite extensive inquiries
A spokeswoman said: "He is known to have a number of friends and family in the Dunfermline and Edinburgh areas.
"However, officers working on the inquiry have information to suggest that Terence may now be residing in the London area.
"Anyone who has seen Terence Hutton since 10 May 2007, or anyone who knows his current whereabouts, should get in touch with Tayside Police."