Days Episode 11 - 91

: Avilio intends to kill both Don Vincent and Nero Vanetti.

: 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

: 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.

Avilio coordinates with Ganzo Alary to execute a multi-layered assassination during the opera performance:

In episode 11 of 91 Days , titled "All for Nothing," the "piece" being prepared is the final stage of Avilio’s (Angelo's) intricate plan for revenge against the Vanetti family . The episode centers on the grand opening of the Vanetti Playhouse, a project that was Don Vincent's lifelong dream. The Plan for Revenge

The "preparation" also involves mental and emotional manipulation: