The husband of a woman murdered in her Sydney home on Halloween last year has made an impassioned plea for information to help track down the killer.
Lynette Bradbury, 56, an employee of Westmead Hospital's emergency department, was found bound hand and foot in her bedroom.
While children trick-or-treated in the quiet suburban street she suffered multiple injuries, including suspected fatal head wounds.
The mother and grandmother was discovered late on Halloween night last year by husband Brian Bradbury at their home in Kerrie Road, Oatlands, in the city's northwest.
On Wednesday, her family appealed on the anniversary of her death for assistance from the public.
"The past year has been like living in limbo and hell for our family," Ms Bradbury's sister Suzanne Walker said.
"Having to come to terms with losing Lynette and not knowing why this has happened has ripped our hearts apart."
The victim's mother Dorothy Smith never thought she and her husband would have to bury their daughter.
"From one human being to another, I implore you to come forward with information," Ms Smith said.
"No matter how insignificant it seems to you, it may be the piece of information that helps the police with the missing link that will solve this tragedy."
Ms Bradbury was at home at about 4.30pm (AEDT) when her husband, who worked at the same hospital, left for his shift and returned home at about 11.30pm.
Homicide Squad commander Michael Willing said detectives from Strike Force Busker were continuing to investigate the murder.
"Today we are renewing our appeal to the public in the hope that someone will come forward with the information that will allow us to resolve this case," Detective Superintendent Willing said.
Anyone with information relating to Ms Bradbury's murder is urged to contact Crime Stoppers on 1800 33 000.
Author: Andrew Duffy, AAP. Approving editor: Matthew Henry