Here is a summary of the story "The Mafia Boss":
Don Vittorio Conti, the aging, respected boss of a powerful New York crime family, is diagnosed with a terminal illness. Knowing he has only months to live, he faces a crisis of succession with his impulsive son, Marco, who is hungry for power but lacks the strategic wisdom to lead.
Vittorio’s world is split between his brutal, legitimate business empire and a secret source of light: his granddaughter Sofia, an art historian who knows him only as a kindly retired businessman. As he plans a quiet, orderly dissolution of his criminal operations to leave a safer legacy, two threats erupt simultaneously.
First, his son Marco botches a high-stakes meeting with a ruthless Russian mobster, Sergei Sokolov, sparking a war. Second, Sokolov’s hitmen attack Vittorio at his neighborhood café, where Sofia accidentally walks in and witnesses him commit a murder to save her life. Her horrified discovery shatters their relationship and destroys the only pure part of his life.
Facing a gang war and a coup from within his own family, Vittorio is forced to abandon his peaceful plans. In a final, brutal act of both punishment and protection, he orchestrates a violent ambush at the docks. He personally shoots his own son to wound him, saving Marco from being killed by Sokolov’s men or his own rebellious allies. This act ends the rebellion, secures a truce, and forces Marco into a subdued succession.
With his last strength, Vittorio restructures the family towards legitimacy, setting up a foundation for Sofia (who wants nothing to do with him) and imparting a final lesson to Marco: that true strength is for protection, not just domination. He dies in his study, having used the tools of a monster one last time to defend a sliver of light, finding not peace, but a weary end to his conflicted reign.