When Vertigo gives Laurel a full dose, she faces her biggest fear -- Sara as Canary.

Here comes the bad guy. Arrow and Arsenal are in hot pursuit.

Arrow and Arsenal are running about Starling City!

Arrow is pulling a signature Arsenal jump. No stealing!

Arrow catches up with Black Canary. This appears to be pre-Vertigo.

Arrow and Arsenal appear to feel they have no choice but to watch Black Canary self destruct.

Oliver gives talking Black Canary off the ledge another shot.

Well, Black Canary seems to be a gone girl. What happened?

The original Canary definitely had a more sexy side to her.

Black Canary is propping herself back up. Is she ready to fight back?

Black Canary gains some control and appears ready to confront her sister.

Is jumping the new thing? It seems everybody is doing it.

Vertigo seems awfully straight faced as he looks at the Canaries.

The Original Canary up against Vertigo, holding Black Canary's baton. Has Black Canary become Canary in her visions?

Sara stares down at her big sister, perhaps wondering why they look so similar, perhaps cheering her on...

Black Canary looks a little worse for the wear, but she has some rockin' boots!

Is Vertigo about to beat Black Canary with her own baton?

The Hood is back on the prowl. Will Capt. Lance ever admit he knows it's Oliver?

Vertigo is back and he's about to create a nightmare.

Felicity is giving a longing look. For what is she longing?

Ray Palmer is working on his exosuit which will transform him into ATOM.

Felicity is continuing to aid an upcoming hero in Ray.

Felicity seems quite interested in how the suit is coming along.

Oliver and Thea have a heart to heart conversation.

Roy is suited up as he breaks into the sibling's discussion.

Roy and Thea chat, and from what we know, he warns her of Malcolm.

Thea doesn't look happy. Did the chats get to her?

Malcolm looks as if he's unsure what to think of Thea. Does she know about him?