As a result of online search, Wichita assassinated Cleo in the movie, but there was no such plot in the original book.

Mike's series of revenge actions are in the original chapter 3 1, and the order of killing is: 1. The unknown killer killed the traitor who betrayed Mike in Sicily (leading to the death of Mike's first wife). 2. Locke killed Tattaglia. Nelly killed bassini. Tessio was removed from his post. Clemenza killed Carlo. 6. The Corleone family launched a full-scale counterattack. This is the end. There is no such "powerful and weird" scene as the landlord said. (The versions are different, and the name translation may be different. )