The sixth episode of the hit show based on DC comic's superhero, The Flash airs today, Tuesday 18 November at 8 pm ET on The CW.

The episode is titled, The Flash is Born, where Greg Finley guest stars as DC comics' villain Girder.

Click here to watch the episode online.

The official synopsis reads:

The Flash (Grant Gustin) faces a new meta-human named Tony, who can turn himself into girded steel at will. While Dr Wells (Tom Cavanagh) and Caitlin (Danielle Panabaker) are concerned about Barry's safety, Cisco (Carlos Valdes) comes up with a plan to take Tony down. Meanwhile, Iris's (Candice Patton) blog on The Flash gets her into trouble, and Eddie (Rick Cosnett) witnesses Tony's abilities firsthand and begins to ask questions that Joe (Jesse L Martin) doesn't want answered. Joe asks Dr Wells to help him solve Nora Allen's murder.

Iris's blog about the Red Streak, lands her in lot of trouble, when she is kidnapped by Tony as a bait to lure The Flash. Also there are new developments on Barry Allen's mother's case, as Joe ask for Dr Wells' help in solving the murder mystery.

Watch the promos here.