The "preparation" also involves mental and emotional manipulation:
: Nero visits his dying father, Vincent, who reveals that Testa Lagusa (Avilio's father) was actually his best friend. Vincent is haunted by the regret of killing him for the sake of the "family". The Climax 91 Days Episode 11
: Avilio intends to kill both Don Vincent and Nero Vanetti. : Ganzo reveals to Avilio that he was
: Ganzo reveals to Avilio that he was the fourth man present the night Avilio’s family was murdered, though he claims he did not fire a shot. : The plan involves letting Don Galassia and
: Ganzo provides Avilio with the layout of the playhouse. Vincent's room is bulletproof and has no outside doorknob, requiring a key or for someone inside (Nero) to open it.
: The plan involves letting Don Galassia and his men escape first to avoid starting an immediate war with the Chicago mafia before the Vanettis are neutralized. Key Revelations