Oliver is concerned when a mysterious illness sweeps the city, infecting hundreds of people, including Diggle. Oliver discovers Vertigo in Diggle's blood and realizes The Count has broken out of prison and is once again distributing his drug.

Starring:

Stephen Amell, Katie Cassidy, Colin Donnell, David Ramsey , Willa Holland, Susanna Thompson, Paul Blackthorne

Genre:

Action, Adventure, Drama, Mystery, Sci-Fi