Rose Byrne has joined the cast of sci-fi thriller I Am Mother. According to Variety, the 39-year-old actor will voice the title robot Mother in debutante director Grant Sputore's film. Byrne said the movie is a "unique, eerie, unnerving and visionary science fiction piece.

He is such an exciting talent to come out of Australia and I am so flattered to be on board with such an incredible artist." Michael Lloyd Green penned the script, which was on the 2016 Black List. Hilary Swank and Clara Rugaard also star in the film.