The first 3 seasons are excellent. I used to recommend this series to all my friends. Few episodes, good story, unique characters. Then the fame came and brought greed. History Channel decided to double the earnings by doubling the number of episodes in season 4. Without enough content to fill the episodes, the show became slow and boring. I decided to stop watching it by the end of season 4 because I realized it was declining. I don't want to screw up my good memories.