Original sentence: The suit is based on Grisham's sole non-fiction book, The Innocent Man, a book about the investigation of the murder of a cocktail waitress in Ada, Oklahoma, and the exoneration by DNA evidence of Ron Williamson and Dennis Fritz more than 12 years later
Edited sentence: The suit is based on Grisham's sole non-fiction effort, The Innocent Man, a book about the investigation of the murder of a cocktail waitress in Ada, Oklahoma, and the exoneration by DNA evidence of Ron Williamson and Dennis Fritz more than 12 years later