I found the last season hard to get through and thought the ending was pretty poor.
I loved entire Series, but ( you could tell this was going to happen), things just got darker, and darker, murder after murder. Murder was the universal problem solver, and this bummed me out...
Until there was no hope of value/redemption.
The Byrds- they survived, but all they had was each other, to the exclusion of anyone else- so sad.
At least that's my take!
( Ruthie, love of my life- that character/acting blew me away)