The third episode of The Flash airs today, Tuesday, 21st October at 8 pm ET on The CW.
The 3rd episode of the Arrow spinoff show is titled Things You Can't Outrun, and in the episode, Flash battles the Mist, a villain who can transform himself into a toxic gas.
The episode will also introduce in flashback scenes Ronnie Raymond, who reportedly died in the accelerator accident but will instead pop up as 'Firestorm' meta-human in later episodes.
Click here to watch the episode online.
The official synopsis reads:
In the first sneak peek, the group discuss that they need a place well equipped to handle villainous metahumans in Central City.
Here is the 30 second promo released by CW