Nine is banking on its reality television stable to continue winning ratings along with a new drama based on gangland lawyer-turned-informer Nicola Gobbo.
The network announced plans to keep Married at First Sight, The Voice, Lego Masters, Ninja Warrior and The Block on screens in 2020 at its Upfronts event at Sydney's Fox Studios on Wednesday.
A new drama mini-series - called Informer 3838 - will tell the story of the events surrounding Gobbo, known as Lawyer X.
She will be played by Ella Scott Lynch while Underbelly actors Gyton Grantley and Robert Mammone will reprise their roles as Carl Williams and Tony Mokbel respectively.
Actress Rebecca Gibney will also reprise her role as forensic psychiatrist Jane Halifax in Halifax: Retribution - 26 years after the show premiered.
"Having grown as a woman and hopefully as an actor over the last 20 years I'm really looking forward to exploring Jane's world from a new perspective," Gibney said.
New in reality television includes The Parent Jury, a controversial new series which will test mums and dads who believe their parenting style is the best.
Medical drama Doctor Doctor will return, but there was no word on whether the reboot of 90s drama SeaChange would continue in 2020.
This year the network continued its expansion of former Fairfax Media titles into TV, after it acquired the media company last year.
Good Food will have a Christmas special on December 7, which follows real estate title Domain launching into television this year.
Nine stars Kelly Rowland and Guy Sebastian of The Voice, The Block's Scott Cam and Shelley Craft and Lego Masters host Hamish Blake attended the launch.
Australian Associated Press