A £20,000 reward is being offered for information that leads to a conviction in relation to a murder of a woman.
Crimestoppers and Sussex Police are offering up £10,000 each after Valerie Graves was murdered nine months ago in Smugglers Lane, Bosham.
The 55-year-old grandmother was found dead on December 30 last year while house-sitting for a friend.
It is believe the artist was attacked in her bed with a hammer by an artist.
She had recently moved back to Sussex from Scotland to look after her mother in Bracklesham Bay.
The reward will be paid out for information, received through the Crimestoppers anonymous phone line, that leads to a conviction.
Angela Hollinshead, Crimestoppers’ area manager for Sussex, said: ‘Valerie’s murder was extremely brutal and her family has been devastated by her death.
‘It is hoped that, by increasing the reward, this may assist in convincing someone to come forward and provide us with the critical information that may solve this crime.
‘I urge anyone with information to contact Crimestoppers immediately without the fear of their identity being revealed.’
Detective Superintendent Nick May from the Surrey and Sussex Major Crime Team, said: ‘We are appealing to anyone who has any information.’
Call Crimestoppers on 0800 555 111 with information.