Phoebe Tonkin is to star in and executive produce a new Australian TV crime drama series, “The Dark Lake,” based on a novel by Sarah Bailey.

The series is to be produced by Brouhaha Entertainment, the Australia-u.K. outfit headed by veteran producers Gabrielle Tana, Troy Lum and Andrew Mason. The company recently delivered Netflix’s Brisbane set “Boy Swallows Universe,” in which Tonkin also stars.

Production and financing details were not disclosed and the series has not revealed a director or a broadcast or streaming partnership.

The story follows Gemma (portrayed by Tonkin) as she is forced to confront the secrets of her past when assigned to the murder of her high school nemesis in her small and tight-knit hometown. Through law enforcement, Gemma anchors herself to the dichotomy of right and wrong, in an effort to redeem her own deeply compromised decisions.

“The series investigates the moral workings...