The CW drama series DC'S STARGIRL follows high school student Courtney Whitmore (Brec Bassinger) and her stepfather Pat Dugan (Luke Wilson) as she leads an unlikely group of young heroes to take on the legacy of DC's very first superhero team, the Justice Society of America. The third season finds Starman (Joel McHale) back from the dead and offering to train Courtney while she helps him adjust to his new life in the quiet town of Blue Valley. But when there's a murder that needs to be solved, the mystery will not only have our heroes questioning the former super-villains' commitment to truly reforming, but lead Courtney, Pat and Starman to a secret that will shock them all to their very core.