A reward of $200,000 is still available for information that leads to the arrest and conviction of those responsible for the death of Catherine Holmes and Georgina Watmore in Cowra, central New South Wales, in 1987.

On 14 April 1987, 28-year-old Catherine Holmes, a mother of two, held a small party at her home. Her 24-year-old colleague and friend Georgina Watmore attended.

It is believed that they were bludgeoned to death with an unknown weapon after the party ended in the early hours of 15 April.

The two women, who worked together at the Edgell cannery, were discovered by a friend and neighbour the next day when they failed to attend work.

The police investigation at the time was thorough with police speaking to more than 1,200 people both in NSW and interstate as part of the investigation.

In May 1987, the NSW Government posted a $50,000 reward and offered a free pardon to an accomplice who did not commit the crime yet provided information. These inquiries could not identify a clear suspect.

Strike Force Alister was formed in March 2009. The NSW Police Force's Behavioural Science Team has been extensively consulted regarding the analysis of crime scene behaviours and the capabilities and likely characteristics of the offender.

Georgina’s brother, David Booth, welcomed the substantial reward offer and urged anyone with information to contact Crime Stoppers at 1800 333 000.

“There is someone out there who has information about my sister’s death,” he said.

“Unfortunately, their conscience has not been enough to get them to contact police.

“I hope that this reward is enough to change their mind, and to give my family and Catherine’s some answers as to what happened that night.”

Detective Inspector Geoff Kendall, Crime Manager at Chifley Police District, acknowledged that while the investigation has been extensive, anyone who believes they have helpful insights should not hesitate to contact either Crime Stoppers or Cowra Police Station directly at (02) 6341 5099.

“We urge anyone with information relating to this longstanding investigation to come forward with any details – no matter how insignificant they may seem,” he said.