The story of The Sinner mainly focuses on uncovering the hidden motives and past traumas of a seemingly ordinary person who commits a shocking crime out of the blue.
The Sinner isn't based on a true story. It's the product of the writer's imagination and creative storytelling. The drama and events are crafted specifically for the show.
Sort of. The show incorporates elements from real-life crimes and situations, but it weaves them into a fictional narrative with added elements for entertainment value.