Arrow Promo 301 The Calm: Laurel Kicks Ass

Laurel Lance interrogates someone in hospital who is obviously withholding some valuable information that perhaps could save someones life. I would say this guy is working with the bad guys for this episode.

Someone recently tweeted:

Uh oh. Laurel is going to be pissed. That is not a good thing. #Arrow

So I think this scene is after whatever the bad things that happen, so I would say something happens to someone she cares about, and prime suspects is Sara.