I don't know who the author of 'the sinner novel' is. There are so many novels out there and without more context, it's difficult to determine the author.
I'm not sure specifically as there could be many novels with this name. But generally, it might be about a character who has committed a sin and the consequences or journey related to that sin.
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.
No, 'The Sinner' is not based on actual true events. It's a fictional drama crafted to entertain and engage viewers with compelling storylines and complex characters.