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.
The Sinner might have real - story elements in the way it presents the crime scenes. They are often depicted in a way that seems based on real forensic evidence and police procedures. Also, the motives of the characters that are related to real - life issues like past traumas could be considered real - story elements.
There is also a possibility that 'the sinner real story' is a local or less - known narrative. It could be a story passed down in a particular community about someone who sinned in the past, perhaps related to a moral or religious transgression. This kind of story is often used to teach lessons within the community about right and wrong. Without more information, it's hard to be more specific about what the exact 'the sinner real story' is.
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.