Raylan tangles with a deadly branch of the Crowe family tree; Boyd goes into the dark heart of the collapsing Detroit mob.
Raylan and Boyd collide on the hunt for Dewey Crowe; bad blood simmering in the Crowe family finally boils over.
Raylan partners with a DEA agent whose bad behavior feels uncomfortably familiar; Boyd makes a hard choice to protect Ava.
A mob revenge plot descends upon Kentucky; Boyd's recent successes are tempered by a crushing defeat.
Raylan chases a missing Kendal Crowe; Boyd and his new partners fight their way back across the border.