Convicted rapist Francis John Wark, 65, killed 17-year-old teenager Hayley Dodd She was last seen alive in 1999 walking along a road about 200km north of Perth Hayley's mother Margaret fought for 22 years for Hayley's killer to face justice Judge said Wark stopped at side of road and attacked Hayley in 'violent struggle' WA Supreme Court ruling replaced a murder verdict from judge-alone 2018 trial Judge said Hayley's manslaughter was one of the worst recorded cases in WA