"The Flash" is back tonight with its first episode in more than a month, titled "Potential Energy." CBR has an exclusive clip from the episode, featuring Barry (Grant Gustin) and Patty (Shantel VanSanten) on what starts as a perfectly love date (flaming flowers aside) -- and soon takes a turn for the much, much worse when Zoom arrives.

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"The Flash" airs 8 p.m. Tuesdays on The CW. Here's the official description of tonight's episode, written by comics veteran Bryan Q. Miller:

JOE AND IRIS GET TO KNOW WALLY - Now that they've grown closer, Barry (Grant Gustin) considers telling Patty (guest star Shantel VanSanten) that he is The Flash. Meanwhile, Joe (Jesse L. Martin) and Iris (Candice Patton) try to get to know Wally (Keiynan Lonsdale), and the team hunts down a meta-human who can slow time itself. Rob Hardy directed the episode written by Bryan Q. Miller (#210).