The father of Julie Ward - a British woman murdered in Kenya 18 years ago - is calling on the country's president to reopen the inquiry into her death.
Kenyan officials first said Julie Ward was killed by animals
John Ward is in Kenya to deliver an open letter to Mwai Kibaki saying new witnesses and DNA mean the investigation should be started afresh.
Miss Ward, from Suffolk, was 28 when her charred, dismembered remains were found in the Masai Mara game reserve.
The murder is one of the most notorious cases in Kenyan history.
At the time, the authorities said she had been attacked by wild animals.
But an inquest later concluded there had been a major cover up.
A series of trials failed to lead to a conviction, arousing suspicions that whoever was involved had important political connections.
Now Mr Ward is in Kenya to deliver a letter to Mr Kibaki, urging him to honour promises of a fresh investigation.
Mr Ward has identified a new witness who claims to have seen his daughter before she died.
And DNA evidence, unavailable when she was killed, could now prove crucial.
Mr Ward is making an appeal to a government elected four years ago on a promise of greater openness.
He said solving his daughter's murder would mean an "indelible stain" would be removed from Kenya's reputation.