Flashback to the island: Oliver, Shado and Slade are transported to Fyers' camp, where Yao Fei is waiting for them. Slade is pissed that his ex-partner led Fyers straight to them, but Yao Fei says he had a good reason. Apparently, Fyers was planning to fire up his entire force just to eliminate the trio. Yao Fei thinks they have a better shot at survival this way. Meanwhile, Oliver spots a familiar face. It's the guy he found bound in a cave earlier this season! You know, the one who claimed to be a lost student and begged Oliver to free him? Apparently, Oliver was right not to help him. The man was working for Fyers all along. As Fyers watches, his minion radios air traffic control and redirects a plane toward the island. Oliver points out that a commercial airliner can't land on the island -- which, as it turns out, won't be an issue, because Fyers plans to destroy it.
Back in Starling City, Det. Lance and his partner are trying to figure out why the copycat archer would massacre a "bunch of lab nerds." Lance wants to know what the scientists were working on, but his partner informs him that the copycat archer killed everyone who knew anything about the project.
Meanwhile, Roy continues his quest to find the vigilante. He snaps photos of Lance and his partner as they chat outside of the lab (sorry, but how exactly are these pictures to help him find Arrow?). Anyway, Thea points out that the cops don't seem to have a clue about the vigilante's whereabouts, and Roy realizes they don't know what the cops know. (Spoiler alert, Roy: They don't know anything. Ever).
At the mansion, Oliver asks Moira who took Walter. She acts clueless, but Oliver presses forward. Before he can get a real answer however, someone breaks in and shoots them with tranquilizer darts.
Shortly after, they wake up in a dark room where they're tied down to chairs. Suddenly, "Arrow" shows up and tells Oliver that he has failed this city. And here I was hoping to get out of this episode without having to hear that dreaded catchphrase...
Flashback to the Island: Fyers breaks down his end-game: He wants to destabilize China's economy by shutting down all air travel in and out of the country. To top it off, he's going to make Yao Fei claim responsibility for the soon-to-be downed airliner. When Yao Fei refuses, Fyers shows him what's at stake. After punching Oliver, Fyers shoots Slade in the leg and Shado in the shoulder.
In Starling City, Thea shows up at Lance's precinct under the guise of CNRI. She eavesdrops as Lance tells his partner that Markov made a couple of calls to Merlyn Global. Armed with this info, Thea rushes to Roy's place to tell him about the copycat archer's possible connection to Merlyn Global. Roy doesn't get it. "We're looking for the Hood, not some wannabe," he says. Oh Roy, just go back to taking pictures of cops. Thea patiently explains that the guy with the black arrow seems to hate the guy with the green arrow, and if they find one, they might be able to track down the other.
Meanwhile, Moira begs "Arrow" (a.k.a. Diggle) not to hurt her son. He tells her he wants to know about The Undertaking. He hits Oliver, until Moira finally admits that Malcolm Merlyn is planning to level The Glades with a device that can supposedly cause an earthquake. The device was invented by Unidac Industries, which explains the killing spree earlier in the episode. "Arrow" wants to know how Moira got involved in something so sinister, and she explains that she inherited the problem from her husband.
NEXT: Oliver, Diggle, and Felicity go undercover...