The Blacklist - Season 1, Episode 11: Soundtracks

Karen wakes up dazed lying strapped to a gurney face to face with a man who tells her he's going to collapse her left lung

Red tracks down everyone involved in his kidnapping and kills them all.

End of episode with Red pouring the ashes of the murdered agent by the lake & then telling Newton to look out at the water , then murders him for being one of the ones responsible for kidnapping him.