Arrow Season 4 Episode 5: Haunted Producer's Preview Released

Executive Producer Wendy Mericle previews Wednesday's episode of Arrow: "Haunted."

"We're going to see Sara out in the city doing exactly what we expected of her do, which is randomly murdering people," Mericle explains in the featurette. "Sara is still being inflicted by the Lazarus Pit side effects and she's still a wild, feral animal who is determined to kill and she's unstoppable. It's a very dark episode where we'll see Laurel really grappling with her decision to bring her sister back from the dead and try to put this genie back in the bottle."

"We're very excited that the only solution for doing that is bringing on John Constantine and he's going to be the key to bringing Sara back and bringing her soul back," Mericle adds. "We feel very lucky, Constantine is a favorite character of the comic book fans watching our show and it's just a fun, different dynamic to have on the show."

Listen to her comments in the video below, which features new footage.

When things take a turn for the worse with Sara (guest star Caity Lotz), Oliver (Stephen Amell) calls in a favor from an old friend who deals in the mystical, John Constantine (guest star Matt Ryan).

John Badham directed the episode written by Brian Ford Sullivan and Oscar Balderrama (#404)

"Haunted" episode of Arrow will air on Wednesday, November 4 at 8 p.m. ET/PT on The CW.