Tom Felton’s debut episode in “The Flash” Season 3 has been revealed.

Felton’s character Julian Albert will first appear in Season 3, Episode 2, titled “Paradox.” The synopsis for the installment’s second episode revealed that Julian and Barry Allen’s (Grant Gustin) first meeting will take place in the episode, and Barry will be surprised by his new co-worker’s immediate disdain for him.

As reported by TVLine last June, Julian is a CSI at the Central City Police Department who suspects there’s more to Barry than just his good guy reputation.

The casting call for Felton’s role, which was obtained by TVLine last May, revealed that the new character will eventually set out to learn what Barry is hiding — “all while concealing some secrets of his own.”

In an interview with SciFiNow late last month, Felton said that Julian and Barry have an “abrasive relationship” at the beginning of the upcoming installment.

“He’s a forensic expert, so he treads on the toes of much of what Barry is good at. Hence, they have a slightly abrasive relationship at first,” the 29-year-old British actor teased. “I say abrasive, but I mean that — clearly because of the events of the season — none of the relationships that Barry has had with other cast members is the same.”

“He’s not familiar with me, but I’m familiar with him, so it’s an odd dynamic,” the “Harry Potter” alum added. “It seems like a love/hate thing at first.”

The synopsis for Season 3, Episode 2 also reveals that Barry will be leaving the “Flashpoint” timeline at the end of the premiere episode and will discover next episode how much of the main timeline had changed due to the events that happened in the “Flashpoint” alternate reality.

“The Flash” Season 3 premieres on Tuesday, Oct. 4, at 8 p.m. ET on The CW.