This is a fantastic crime drama. Nicola Walker and Sanjeev Bhaskar were a brilliant combination. It was extremely tragic the way series 4 ended and hope the series will be back once more. Its a crime drama, when you see the first, you can't wait to see the second, third, fourth....and so on. Chris Lang is a brilliant writer who writes in away that he makes every series unique and better as it gets. There is always a superb selection of actors, all doing justice to their role. Three cheers to all the supporting casts who play their role so well that you can hate, love or pity the character they portray. The directors are really a genius in the way every episode flows so well. But yet the last episode last night was so troubling to see the main character go. Sunny's speech at the end was so touching. I hate to see Nicola Walker go as she had built the character so well and have not seen such a refined actress. Deserves a BAFTA!! I just wish that this is Sunny's weird dream ..only to see Cass coming out of her critical condition the next day in series 5. :)