What is more dangerous than the drug introduced to viewers and Starling City residents on last night's new episode of Arrow?

The drug DEALER, that's what.

And we'll meet that dangerous individual on next Wednesday's "Vertigo," a mysterious villain named The Count and played by Seth Gabel.

Look for Oliver to turn to an ex-girlfriend (played by Janina Gavankar of True Blood) and current Vice cop for help with this nemesis and get your first look at him in action via the following CW trailer:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.