Jessica Zrinksi hasn't been seen since last November. -PR Handout Image
A $500,000 reward is being offered in the hope it will spark someone's memory and help find a woman missing for 12 months.
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The family of Jessica Zrinski, 30, heard from her about 10pm on November 27, 2022 from Sydney's Bossley Park area.
She was reported missing by them a few days later when they couldn't find or contact her.
Police discovered Ms Zrinksi had been in the car park of a hotel at Greenfield Park about 10pm on Monday, November 28, before leaving in a blue Holden Commodore station wagon about 10 minutes later.
Investigators say the car travelled west on the M4 motorway and Great Western Highway towards the Blue Mountains.
On the anniversary of her disappearance, Ms Zrinksi's family will join police to announce a $500,000 reward for information that helps locate her.
Police have also released new CCTV footage of Ms Zrinksi in the Commodore, which was seen travelling through Horsley Park about 10.15pm on Monday and Mount Victoria on Tuesday, November 29 at about 8.50am.
Any witnesses who may have seen the car in the areas at those times have been urged to contact police.