The Flash (2014 TV Series) - Season 8 - Episode 13

In Episode 8, “Flash vs. Arrow,” Barry’s world expands when Oliver Queen, Felicity Smoak, and Diggle arrive in Central City, setting up one of the most memorable crossover episodes in the Arrowverse. What begins as an exciting team-up soon turns tense when a meta-human’s powers intensify anger and conflict, causing Barry and Oliver to clash instead of cooperate. The episode blends superhero action with character-driven tension, and it stands out because it shows that even allies can become obstacles when emotions get in the way.