Diggle's waiting in the hallway. Oliver's still planning on investigating the Vertigo. He starts to claim that because it's in liquid form, it contains water. So maybe they can trace the water! This is clearly nonsense, so it's a good thing he gets overwhelmed by wooziness and falls down.
Flashback! Oliver's body is about to be tossed off a cliff. Yao Fei says he'll do it, which gives him time to do the magic wake-up nerve touch. But he still throws Oliver down a fifty-foot drop into a lake.
Oliver and Diggle have gone to Q Consolidated. Diggle thinks they should go to a hospital, because they don't know what's in Vertigo. They're here to see Felicity, their all-purpose genius. Oliver claims that his buddy is starting an energy drink company, so he'd like Felicity to run "a spectroanalysis" on this liquid to find out exactly where it's made. Felicity asks why this alleged energy drink is in a syringe, and Oliver claims he ran out of sports bottles. I am really enjoying how lame his excuses have gotten.
Arrowlair. Diggle reports Felicity has determined that the water in the syringe came from "runoff water originated within a ten-block radius of where East Glades meets the bay." That's awfully specific! And completely nonsensical! But it's going to get worse as Diggle continues: "Nothing there except an old juvenile detention center, abandoned about three years ago." Really? An abandoned juvenile detention center? This is like when Batman's always surprised that the Joker has taken up residence in one of Gotham City's many abandoned toy factories and amusement parks. Oliver's ready to go, even though he's still suffering the aftereffects of Vertigo. Diggle holds up a tennis ball next to his head. If Oliver can hit it, Diggle will let him leave. Oliver holds up the bow, and his vision gets blurry. He puts down the bow and leaves anyway. No arrows?
Oliver (in Hood apparel) fights his way up a staircase, beating up various goons and then acting wobbly. Outside, the police arrive with blaring sirens and flashing lights. Good for them! Oliver reaches a laboratory and smashes up some stuff. The police go up the stairs and comment on the wreckage. Oliver finds The Count and shoots him up with his own Vertigo. But while he's standing there, the police come in and tell him to back away or they'll shoot.