Let me start off by saying I love Torchwood. It has always been brilliant and it got better with every series (Series 2 is my personal favourite though). The americanisation of this fourth series has seen its fair share of ups and downs. There were many things to enjoy in this series, but the problem is it was let down by a very slow moving story which was all the time giving us questions and never any answers, I mean you don't even find out the who, what, why and how until the last 2 episodes, when they should have been revealed about half way in. Another problem is that Torchwood is a sci-fi show about a team of people who fight aliens, yet there was no aliens to be seen the entire series, plus the fact there wasn't even a clear strong protagonist for our team to fight. The best episode of the series is the 7th, called 'Immortal Sins'. It focuses heavily on Captain Jack and gives us more insight into his past while at the same time presenting us with a real, believable love between two characters that reminded me of the series 1 episode 'Captain Jack Harkness' and let me tell you that both these episodes broke my heart. One brilliant episode is not enough to make up for the averageness that was the rest of the series, with episodes 2 and 3 being outright filler in my eyes. I do hope another series gets made because in the end it is Torchwood and I do love it, plus the last episode sets some seeds for another series. Overall, it's a good series, not the best, you'll enjoy it, but just know it moves quite slowly.