Red Lake is a small-town Australian crime thriller about Sergeant Harper Quinn, who returns to her hometown of Koorinda hoping for a quieter life. But when the town’s old waterpark is set to reopen — the same place her little brother disappeared 30 years earlier — Harper is pulled back into the trauma her family never escaped. When a body is found at the park, Harper’s past and present collide. Determined to uncover the truth, she begins digging into long-buried secrets that someone clearly wants kept hidden. It sounds like a tense, emotional mystery with cold-case elements, family trauma, small-town secrets, and a darker investigative tone.