Sisters is a seven-part series which aired on Channel Ten from the 25th of October 2017. A pilot episode was filmed in 2016, and it was then picked up as a series later that year. It tells the story of Julia Bechly (Maria Angelico), whose award-winning (and dying) father, Julius (Barry Otto), admits he used his own sperm in hundreds of IVF procedures. As a result, Julia has over a hundred half-siblings, of which only two are women, Roxy (Lucy Durack) and Edie (Antonia Prebble).
Catherine plays Genevieve, the laid-back and down to earth mother of Edie, who received IVF treatment 30 years ago at the Bechly Institute to help her conceive Edie.