Oh, I just love episodes with Beckett, I would say (exclude Whispers). So, I think when I realized this one has Beckett, I liked it from the first minute.
But that would not be enough - episode need much more than just chars we like. This one had action, yes, we had wining McKay (who never seems to be happy with anything) and I adore the whole Hoffan drug storyline from the start till now. So, I could say, we had much more. The start of the episode was strong and end too but somewhere in middle, the motion just got little slower.
I loved the new shades of Beckett we saw as I have never seen him stand up and speak his mind so loudly. So, great episode.