Holy shit...this season is amazing. I'm only 4 episodes in, but GODDAMN, if the quality stays like this, then this is hands down the best season of superhero TV I have ever seen. Better than DD S1 by a mile. I had to stop to catch my breath because episode 4 has an amazing, harrowing sequence in a prison that carries a tension with it that I haven't seen in any other show so far. Now I'm diving right back into it. I need to stop and sleep soon but wow. Just wow. I love season 3.
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So I just finished all 13 episodes, and I stand by my original statement: this is far and away the best season of superhero TV that I have ever seen, hands down, by far. Every episode was great. None of them were slow or "filler", and each one managed to escalate the situation more and more. The fight scenes were superb, the acting and the dialogue was tight, everything was about as good as it could possibly be.
I only have one criticism and it is story-related so I'll spoilertag it: where the HELL was Frank? I'm dead serious, especially after DDs2, it makes NO sense that Frank Castle would be a no-show when the Kingpin is back and taking over New York. I have a very hard time believing that during everything that happened in S3, no one would even mention Frank Castle's name, ESPECIALLY KAREN. It's like season 2 got completely retconned. Punisher season 2 had better have a good explanation as to why Frank was completely absent during all this crap going down.