A £20,000 reward has been offered for information leading to the conviction of the killer of a south Wales mother.
Beverley Parkhouse stayed with her father several times a week
Beverley Parkhouse, 45, was found dead in a room set on fire in her father's house in Ogmore Vale near Bridgend.
Police say it is an unusual case. They did not initially treat it as murder, but think she was probably suffocated before the fire was started.
Detectives want to trace her silver flip-top mobile phone and lighter, and the owners of cars seen in the area.
One man was arrested but has since been released.
South Wales Police have set up a mobile police station at the end of her father's road, Cardiff Street, to encourage people who have information to come forward.
It came a day before Ms Parkhouse, who was a care worker, would have turned 46.
Ms Parkhouse lived in Ogmore Vale but would stay at her father's house several times a week.
On Sunday, 3 September, she went out with friends in Nantymoel to the Top Club before returning to her father's home and going to bed.
But when she still had not got up late the following morning, her father went to check on her and found her lying dead in her bed. A fire had been started in the room.
As police investigations continued, enough evidence was gathered to suggest she had been murdered.
One man came forward and told police he had been with Ms Parkhouse after her father had last seen her. He was questioned and released.
Det Supt Paul Kemp said: "This investigation has been running since 4 September.
"We've gathered lots of information but we haven't caught the person responsible. I firmly believe there must be someone in the community who has information.
"This is an unusual case. We are satisfied that Beverley was probably suffocated. I can't speculate about the cause of the fire but I'm confident that the fire was connected to her murder."
He appealed for further information about her movements that night from 11.30pm until her body was found the next day at 11.30am.
Mr Kemp said the fire had caused significant damage and he could not rule out that vital information had been lost.
Mrs Parkhouse was found at her father's home (L)
Police want to trace Ms Parkhouse's lighter and a silver flip-top mobile phone which she used that night at her father's house but has been missing since her death.
The owners of cars seen in the area at the time of the murder are also being urged to come forward to eliminate them from the inquiry.
One is a dark blue Mini with a Union Flag printed on the roof and a Neath RFC sticker in the rear window. Another is a blue K-registration Peugeot parked at the top of Cardiff Street on the day she was killed.
Detectives also want information about a car that was regularly parked at the top of Cardiff Street during the summer months, but which has not been seen since the death.
Police have also put posters up appealing for information about her death and her husband, Andre, has made a fresh appeal for help.
An inquest into her death has been opened and adjourned. Arrangements have been made for her body to be released to her family for the funeral.
Anyone with any information is asked to contact South Wales Police on 01656 655555