I think this list might have cost Walter his life.

Felicity

Felicity: If it's an energy drink, why is it in a syringe?
Oliver: I ran out of sports bottles.

Vertigo is measured in lives. Fifty six people died to perfect this high. Believe me when I say that they did not die for nothing.

The Count

Diggle: Woah. That's a neat trick. You gonna teach me that someday?
Oliver: No.

Diggle: Find what you're looking for?
Oliver: Took down three Vertigo pushers tonight, Diggle. Last one finally knew a name. The Count.
Diggle: The Count. That's worse than The Hood.

Whoever you fear, fear me more!

Arrow

Arrow Season 1 Episode 12 Quotes

Diggle: Find what you're looking for?
Oliver: Took down three Vertigo pushers tonight, Diggle. Last one finally knew a name. The Count.
Diggle: The Count. That's worse than The Hood.

Whoever you fear, fear me more!

Arrow