When I first caught a glimpse of the series I immediately got interested and started watching the first season. It was totally what I like. A series about secret agents with some strong women. The first season is definitely the best, the next two seasons are good too and we see some evolution in the characters (quite literally sometimes). The rest of the seasons are not as good but still worth to watch if you like the series. I think the last three seasons only get crazier and sometimes a bit too crazy but if you're a fan of the first three seasons you'll want to watch he next seasons too. There are definitely some developments around and between the characters that you'll want to see in the last three seasons.