We started off the season with a Oliver Queen vs The Arrow fight thanks to Vertigo (Peter Stormare). Now we see in the synopsis for the 13th episode of Arrow, called Canaries, Vertigo is back and this time he hits the Black Canary (Katie Cassidy) with his modified drug. Laurel's biggest fear involves her sister, Sara, so this leads to a battle between Canaries as Caity Lotz returns for the episode.
"Canaries" – Oliver (Stephen Amell) is thrown by the changes within Team Arrow. He's used to calling the shots but sees that the team has evolved in his absence and tensions quickly escalate in the lair. Oliver is furious that Laurel (Katie Cassidy) has been going out as the Black Canary and tells her to stop risking her life, but when Vertigo (guest star Peter Stormare) hits the streets again, Laurel goes against Oliver's wishes and tracks down Vertigo who hits her with a full dose of the drug. Laurel's biggest fears revolve around her sister Sara (guest star Caity Lotz) so the Vertigo causes her to hallucinate an epic fight between Canary and Black Canary. Meanwhile, Chase (guest star Austin Butler) surprises Thea (Willa Holland), and Roy (Colton Haynes) warns Thea to stay away from Malcolm (John Barrowman).
Canaries is set to air February 11th.