ok, so the book actually says that along with the title change from "The Tragedy of Michael Corleone" to "The Godfather III", there were also some final chages made to the script, Joey Brasi was changed to Joey Zasa, and Tom Hagan never appeared in the movie.
And if you look up in FFC's outline he has, it's separated in 3 ACTS and within the first ACT FFC notes that Tom Hagan is shot to death, then we hear typing of a note, and the note! "Hagans suicide". and he also included the vatican in those as well. could've been interesting!!

robert

In my home! In my bedroom, where my wife sleeps! Where my children come and play with their toys. In my home.