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Arrow: Darkness on the Edge of Town
As the Dark Archer, Malcolm eliminates the scientists who created the Markov Device and then ships it to Starling City to destroy The Glades. Meanwhile, Oliver, Diggle, and Felicity infiltrate Merlyn Global to learn of Malcolm's plans, and Laurel tries to resolve matters with Tommy. Five years earlier, Fyers tells his captives what his plan is for the missile launcher.
At Unidac, two scientists are going to their lab and one of them starts to invite the other on a date. As they enter the lab, they discover that the rest of their staff is dead except for the lead scientist, Dr. Markov. The Dark Archer is there and kills him, and then shorts out the doors. Security guards arrive and attack the Dark Archer, who takes them out. He then advances on the two new scientists and kills them. Afterward, Malcolm drives off into the night...Read the full recap
Felicity: Are you okay?
Oliver: My mom and my best friend's dad are involved in a conspiracy that may have dire consequences for this city, and I'm pretty sure they murdered my father. I'm not planning on using the word "okay" again anytime soon.
Felicity: Well, no, the last time the vigilante paid your mom a visit, you got shot and I got to play doctor with you. Ahh! My brain thinks of the worst way to say things.
Oliver: Felicity, are you hacking into the Merlyn Global mainframe?
Felicity: "Hacking" is such an ugly word. No. I'm/... yeah. Totally hacking into the Merlyn Global mainframe.
Oliver: Don't look down.
Felicity: Too late. I should mention that I'm afraid of heights. Which I just learned.
Oliver: Hey, Felicity.
Oliver: Hold on to me tight.
Felicity: I imagined you saying that under different circumstances. Very platonic... circumstances.
Oliver: Roy, we haven't met. I'm Thea's disapproving older brother.
When Felicity brings up the website about the Unidac Massacre, everything after the first sentence talks about a legal case that CNRI is filing on behalf of the Moores against Edward Rasmus, and has nothing to do with the massacre. it's in fact a recycled computer screenshot from the preceding episode, which did feature Rasmus.
When Oliver visits Tommy, he tells the security guard his appointment is at 11:30. However, when he gets to Tommy's office a few minutes later, the clock on the desk says 5:35.
Near the end of the episode when Oliver asks Felicity if she has found the location of the seismic device, she makes a mistake in saying that she has at least 1 teraFLOPS of data to go through. FLOPS isn't a measure of data but of computing performance. She should have said that she has at least 1 TB of data to go through.