Rodger Corser (The Doctor Blake Mysteries) plays Hugh Knight, a rising star in the Sydney heart surgery ranks.
The eight-episode fifth season will premiere on Monday, July 26 on the streamer with all episodes available at launch.
The Acorn TV Exclusive drama The Heart Guy also stars returning cast members Nicole da Silva (Charlie), Ryan Johnson (Matt), Tina Bursill (Meryl), Hayley McElhinney (Penny), Matt Castley (Ajax), Chloe Bayliss (Hayley), Belinda Bromilow (Betty), and Charles Wu (Ken).