The whole season was a solid 6/10. But finale was rushed and mediocre at best, A solid 3/10. I don't mind Harrison killing Dexter. But their encounter and conversation was so off and bizarre. The only character that was properly utilized was Angela.
P. S. : I can understand Dexter's willingness to die for his son. But I couldn't see the need for harrison to kill Dexter. Just my personal opinion.