The CW has released a clip from this week's episode of Arrow, "The Scientist," which features Grant Gustin as Barry Allen aka The Flash.
Stephen Amell took to his Facebook to offer the following:
Arrow this week.Â
1. This is a two-part mid-season finale that is at a scale we've never attempted on the show.
2. I fight a guy on a moving vehicle.
3. Not everyone makes it.
4. Cliffhanger. (Naturally.)
5. Barry Allen.
BARRY ALLEN COMES TO STARLING CITY â€” A seemingly impossible robbery at Queen Consolidatedâ€™s Applied Sciences Division brings Central City police scientist Barry Allen (guest star Grant Gustin) to town. Citing a similar case back home, Barry offers to help Oliver (Stephen Amell) and team with the investigation. Oliver senses there is more to Barry than meets the eye, but heâ€™s distracted by the similarities between this current case and something that happened on the island. Meanwhile, Felicity (Emily Bett Rickards) takes a liking to Barry, which doesnâ€™t go unnoticed by Oliver. Sin (guest star Bex Taylor-Klaus) asks Roy (Colton Haynes) for help when a friend of hers goes missing. Roy is surprised when Thea (Willa Holland) not only encourages him to help, but joins the search. Unfortunately, Sinâ€™s friend is connected to Brother Blood (guest star Kevin Alejandro), and their search ultimately gets one of them seriously injured. Michael Schultz directed the episode with story by Greg Berlanti & Andrew Kresiberg and teleplay by Andrew Kreisberg & Geoff Johns.Â