With Avilio’s grand revenge plan all but complete (but for Nero), this final episode is not a lot more than an extended epilogue in which the remainder of the Vanettis are wiped out, Avilio is captured by Nero, and the two kind of dance around each other until Nero finally does what he needs to do.
I’ll be honest: I’ve never been fully emotionally invested in any of the characters, even Avilio, and was never all that big a fan of Nero, so watching all of the underlings, whom I often couldn’t tell apart from each other, was a bit of a bore. Not to mention the tommy guns in this show were way too reliable (not a serious criticism, just sayin’).
I’ve also expected for a while now that Avilio would eventually end up succeeding but feeling utterly unfulfilled, in the same way Vincent was when he killed the Lagusas seven years ago, so the campfire confrontation isn’t all that impactful. These are two people who have been set up from the start to be unhappy and alone, and they’ve done too much to each other for there to be any outcome but one or both of them ending up dead.
The bottom line: any and all hope this show had was wiped out back when Avilio killed Corteo, believing that last shedding of his humanity would be worth it, but it wasn’t. Avilio and Nero have a pleasant final road trip to the seaside, but only Nero gets back in the car and drives away, and we have no reason to believe he’ll be alive long with the new Don Strega and the long arm of the Galassias after him.
As their two pairs of footsteps are washed away by the waves, the lesson of 91 Days is clear: if you’re going to kill a family in a mafia coup, make sure you get all that family’s members. Nero can blame Avilio all he likes, but it was his nervousness/mercy that kept Angelo alive, leading to a life spent—wasted—planning only revenge.