You can't miss the look of concern on Diggle's face, either. Things are getting rough in the Cave on "The Promise."
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Sara looks very concerned about Roy as he walks off. What happened in the cave? We'll find out on "The Promise."
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Roy looks a little peeved at his buddies in the Arrow Cave, doesn't he? Did meeting Slade have anything to do with this? "The Promise"
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Is this when Slade becomes impressed with Oliver's formidable opponent? "The Promise"
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The only logical explanation for this situation is that Slade took the opportunity of Moira's candidacy to open the door and make himself known on "The Promise."
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Thea doesn't look impressed with Slade in "The Promise." There are a lot of things that won't impress her if she knew about them.
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Oliver and Sara stare down Slade in the Queen Mansion. This is the beginning of a big showdown. You can feel it! "The Promise"
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Isn't this an odd moment? Moira kindly greeting Slade Wilson?!? It's coming up on "The Promise."
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Arrow Season 2 Episode 15 Quotes

Moira: What should we drink to?
Slade: To friendship.

Slade: You and I have something in common.
Moira: What's that?
Slade: I know how difficult it is to pick yourself up when other people have written you off.