The show will follow the trial of Jeremy Bamber, who police claim broke into his family home in Essex and shot his parents, sister Bambi, and Bambi’s two young sons.
The murders are one of the most famous and shocking cases in Britain, and Bamber maintains his innocence to this day believing Shelia, who had a history of mental illness, carried out a murder-suicide.
Before now Cressida has been better known for her modelling career, appearing in campaigns for Mulberry and Burberry, but it looks like Prince Harry’s-ex has had her sights set on an acting career for a while, having studied at the London Academy of Music and Dramatic Art and appearing in numerous West End plays.
We don’t know if Harry will tune in to watch his former flame on TV, but we do know the two are on good terms seeing as Bonas was invited to his wedding to Meghan Markle earlier this year.
The show is set to air on ITV in 2019.
This article originally appeared on Marie Claire.