A TV drama based on the murder of Huddersfield backpacker Peter Falconio is in the pipeline.
ITV are developing the one-off programme, called To Catch A Killer, for screening later this year.
The Examiner understands the producers of the show have been in contact with Peter's parents Joan and Luciano, who have decided not to help the film makers.
Producers also contacted Peter's girlfriend Joanne Lees, who also pulled out of helping them.
She has since landed a book deal to tell her story.
Peter, from Hepworth, was murdered on an isolated road near Alice Springs in Australia's Northern Territory in 2001. His body has never been found.
Mechanic Bradley Murdoch was jailed for 28 years after being convicted of the murder at a trial last year.
The drama, by Kate Brooke, will be based mainly on information disclosed at the trial.
ITV controller of comedy and drama Andy Harries said:
"You see the whole thing from different perspectives.
"For a long time it didn't seem absolutely clear what had gone on - they never even found the body.
"We are doing everything we can to make it as accurate as it can be and get as much insight as we can into the story."