Having a tie-in with "The Flash", "Arrow" is made use by The CW to promote its upcoming superhero series. The season finale preview of the sophomore series includes a glimpse at Barry Allen's alter ego showing off his power, running accross a field in super speed.
Fans can expect a longer look at the spin-off series by tuning into the season 2 finale of "Arrow", which will feature an epic showdown involving Slade's Blood Cult and Oliver's camp. Titled "Unthinkable", the episode will air Wednesday, May 14 at 8/7c on The CW.
"The Flash", starring Grant Gustin as the titular character, has received a series order from The CW along with "iZombie", "The Messengers" and "Jane the Virgin". "Arrow", meanwhile, has been renewed for a third season.