The Flash season 1, episode 4, “Going Rogue,” airs tonight with Arrow‘s Emily Bett Rickards and Prison Break‘s Wentworth Miller guest starring.

Previously…

Previously on The Flash, geeky, perpetually late CSI Barry Allen was struck by a bolt of lightning that was the result of a freak storm caused by a malfunctioning particle accelerator. After a nine-month coma, Barry awoke to find himself endowed with super speed.

Working alongside scientists Cisco Ramon, Caitlin Snow, and Harrison Wells as well as his surrogate father, Detective Joe West, Barry uses his new-found powers to save people and help contain other meta-humans who also gained powers in the explosion.

Read our recap of The Flash season 1, episode 3, “Things You Can’t Outrun,” here.

Watch a promo

‘The Flash’ season 1, episode 4, ‘Going Rogue,’ synopsis

If that promo has whet your appetite, make sure to read the official synopsis for the fourth episode of the season:

“WENTWORTH MILLER GUEST STARS AS DC COMICS’ VILLAIN CAPTAIN COLD; FELICITY FROM “ARROW” CROSSES OVER INTO CENTRAL CITY — The Flash (Grant Gustin) stops a robbery but the culprits get away after shooting a guard, and The Flash chooses to save the man instead of following the criminals. Joe (Jesse L. Martin) shows Barry a book of suspects and Barry identifies Leonard Snart (guest star Wentworth Miller, “Prison Break”) as the leader of the group.

“While investigating the case, Barry gets a surprise visit from an old friend — Felicity Smoak (Emily Bett Rickards, “Arrow”), who heard about his new abilities and came to check them out for herself. She joins him at S.T.A.R. Labs to help stop Snart after it’s revealed that Snart his gotten his hands on a stolen “cold gun,” which could kill The Flash. Dr. Wells (Tom Cavanagh) is furious when he finds out that Cisco (Carlos Valdes) built the cold gun without telling anyone and now it’s missing. Meanwhile, Iris (Candice Patton) is getting the silent treatment from Joe because of her relationship with Eddie (Rick Cosnett). Finally, The Flash and Captain Cold have an epic confrontation. Glen Winter directed the episode written by Goff Johns & Kai Yu Wu (#104).”

If you need more goodies to tide you over, we have promotional stills from the episode as well.

Watch a clip from the episode

Watch ‘The Flash’ season 1 online

If you’re unable to catch The Flash season 1, episode 4, “Going Rogue,” live tonight, you’re not out of luck. If you want to watch online, The CW posts new episodes of the show to its site the day after they air.

You can also find new episodes within 24 hours on iTunes and Amazon. The last five episodes to air on The CW are available eight days after broadcast on Hulu as well.

Will you watch the ‘Flash’ season 1, episode 4, ‘Going Rogue,’ tonight?