Barry (Grant Gustin) will be facing a meta human that will trap him inside a mirror. Meanwhile, one of Central City's terrifying villains might be returning in season 3 of "The Flash."

In the upcoming fourth episode of "The Flash" season 3 — titled "The New Rogues" — Barry will be facing off with the Mirror Master (Grey Damon) and it seems that Jesse (Violett Beane) might have something to do with Barry ending up trapped inside a mirror.

According to the synopsis from The Futon Critic: "Barry continues to train Jesse and when a new meta human, Mirror Master, appears on the scene he lets her tag along. Mirror Master has teamed up with his old partner, Top (Ashley Rickards), and is looking for Snart (Wentworth Miller) to even a score. Jesse is quick to join the chase but defies one of Barry's orders, which results in disastrous consequences."

Barry and Captain Cold last saw each other on good terms, and since the Mirror Master appears to be both their enemy, he just might side with Barry this time to defeat the Mirror Master for good.

Meanwhile, recent set photos reveal that The Trickster (Mark Hamill) will soon be returning to "The Flash."

Bruna Skrzypek posted a photo on her Twitter account showing the Trickster and Jay Garrick (John Wesley Shipp) side by side. No other details were revealed about this scene, but it is expected that The Trickster will have a face off with Jay Garrick on Earth-3.

Reports also point out that Hamill's outfit looks very similar to the Joker's. It is possible that Hamill will be changing roles upon his return in the series if he does show up in Earth-3 instead of Barry's Earth-2, and especially since he also once played as the Joker.

"The Flash" season 3 airs every Tuesday at 8 p.m. EDT on The CW.