Episode 1

Episode 1 could refer to a number of different episodes from different series:
 * The first episode of the television series Arrow, Pilot.
 * The first episode of the television series The Flash, Pilot.
 * The first episode of the television series Constantine, Non Est Asylum.
 * The first episode of the television series Supergirl, Pilot.
 * The first episode of the television series DC's Legends of Tomorrow, Pilot, Part 1.
 * The first episode of the first season of the web series Vixen, Episode 1.
 * The first episode of the first season of the web series Vixen, Episode 1.
 * The first episode of the web series Chronicles of Cisco, Episode 1.