It goes downhill after s4 thats What most people say but I liked s5 s6 was shit but I still enjoyed it s7 was actually really good IMO had badass villain and s8 just god awful then dexter new blood (s9) was good until the finale episode. Also bro s4 is a must watch man that shit was so intense its 100% worth it s3 drags a bit but ong keep going and watch s4