The Flash is a superhero TV series that aired from 2014 to 2023 on The CW, based on the DC Comics character Barry Allen, also known as the Flash. Starring Grant Gustin as Barry, the show follows a forensic scientist who gains super-speed after being struck by lightning and becomes the Scarlet Speedster, protecting Central City from metahuman threats. Throughout its nine-season run, the series explored time travel, alternate realities, and deep emotional arcs involving Barry’s friends and family, including his wife, Iris West, and his longtime mentor, Harrison Wells. Known for its blend of action, humor, and heartfelt storytelling, The Flash became a fan-favorite and a key part of the Arrowverse, crossing over with other DC shows like Arrow and Supergirl.