Episode 4

Episode 4 could refer to a number of different episodes from different series:
 * The fourth episode of the television series Arrow, An Innocent Man.
 * The fourth episode of the television series The Flash, Going Rogue.
 * The fourth episode of the television series Constantine, A Feast of Friends.
 * The fourth episode of the television series Supergirl, Livewire.
 * The fourth episode of the television series DC's Legends of Tomorrow, White Knights.
 * The fourth episode of the first season of the web series Vixen, Episode 4.
 * The fourth episode of the second season of the web series Vixen, Episode 4.
 * The fourth episode of the web series Blood Rush, The Sample.
 * The fourth episode of the web series Chronicles of Cisco, Episode 4.