"Expecto Patroum!" Harry Potter fans -- Draco Malfoy (Tom Felton) -- is making his debut on "The Flash" tonight. Felton is playing Julian Albert, a new CSI detective tasked with assisting Barry Allen (Grant Gustin) at the Central City Police Department. The unusual thing about Felton's introduction is that he is part of Barry's life post-Flashpoint and Barry does not recognize him.

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In this new scene from tonight's episode, Barry and Joe visit a crime scene where Julian is studying an unusual skin or husk. Julian clearly thinks that he's smarter than Barry and the way he says "Thank you Mr. Allen" is so similar to the smug way he used to call out "Potter" in the Harry Potter franchise. Their disdain for one another will make for an interesting work dynamic, especially if this new meta human they are investigating is shedding his or her skin and is dangerous.

Felton's first episode, "Paradox," airs tonight: "Barry realizes the effects from Flashpoint are much greater than he thought. Meanwhile, Barry meets new co-worker Julian Albert and is surprised by Julian’s immediate disdain for Barry."

Starring Grant Gustin as the Scarlet Speedster, "The Flash" airs Tuesdays at 8 pm ET/PT on The CW. The series also stars Jesse L. Martin, Tom Cavanagh, Carlos Valdes, Candice Patton, Danielle Panabaker, Keiynan Lonsdale and more.