*Spoilers* is let off the hook in the end?
John the "Pilgrim" gets off the hook Scott free after all the mayhem and dozens of murders of innocent people he was directly responsible for because he has sons? Ummm what?
Okay Frank decides not to kill him. Okay that's fine, maybe Frank is starting to feel he doesn't necessarily have to kill every villain and will leave him to the police. Turns out not so much. To seemingly let him off the hook entirely to go on his merry way (because he has sons apparently) seems out of character & in general a total miscarriage of justice.
I think the season was a bit of a mixed bag overall despite being mostly alright but that was definitely a big unexplained WTF .