Totally Killer is what happens when you take Back to the Future, add a sprinkle of Scream, and shake vigorously with neon scrunchies and ‘80s slasher nostalgia. Kiernan Shipka plays a modern-day teen who time-travels back to 1987 to stop a masked killer known as the Sweet Sixteen Slasher—before he ever starts his murder spree. It’s a meta, blood-splattered love letter to the golden age of horror flicks and teen comedies, with Shipka’s deadpan Gen-Z sarcasm bouncing hilariously off the era’s big-haired optimism. A bloody good time wrapped in leg warmers and trauma.