I think Netflix out did themselves with this one because it was actually rather good and Netflix has a history of disappointment.
It had drama and action from the get go and I actually watched the whole show in 1 day and I haven't watch something this good in forever.
All the characters and acting was on point. Keira Knightley was brilliant as always but Ben Whishaw (Sam) stole the show. Yes, he's a Hitman who's killed people but I just instantly fell in love with him. I always did have a softspot for the "quirky" ones though. I think Williams and her partner were added a nice touch to the show as well.. there was more than one character who made you want to continue watching the show.
It wasn't perfect but it was decent.. I didn't quite like how it ended on a good note since the whole show was so intense. However, it has been renewed for Season 2 already so I expect great things from it.