Escape Room Designer, Interactive Fiction, Narrative Game Designer needed for crime word search book

A writer to create a book with 80 real crime cases, the reader reads the crime mystery and then has to solve the puzzles and discover the murderer. The puzzles need Multiple levels of difficulty , from novice to elite detective. The book should take at least +12 hours of research and deduction to solve all the cases Also include a Bonus Content, like detailed images diagrams and photos for each case. Plus a final mystery that no one in the police station can solve. Include Detailed solutions for all cases. For example : This is how each case is solved: find the hidden words in the word search. One of them never appears; it's the murder weapon. The remaining letters, rearranged, reveal the killer's real name and the exact location where it all happened.