Crisis on Infinite Earths: Part Two

The episode is the second part of the five-part crossover, .

Synopsis
The group uses Ray’s invention to track new recruits to help save the universe. The Monitor sends Iris, Clark and Lois in search of a mysterious Kryptonian, while Kate and Kara head out to find Bruce Wayne. In addition, Mia challenges Sara, Rory discovers a hidden talent, and Lex Luthor returns.

Trivia

 * This episode took place primarily on Earth-1, Earth-96, Earth-99, Earth-18 and Earth-167, plus a small appearance from Earth-74 and Earth-75. However Earth-38, Earth-92, Earth-67 and Earth-3 were all mentioned and/or pictured.
 * Beth Kane, Jacob Kane, Gabi Kane, Catherine Hamilton-Kane, Clayface, Jane Doe, Kate Kane, Beth Kane, Felicity Smoak, Thea Queen, John Diggle, John Diggle, Jr., Nyssa al Ghul, Alura Zor-El and Lena Luthor, Lex Luthor (Earth-96), Clark, Lex Luthor (Earth-167), Lois Lane, Jimmy Olsen, and Perry White were all mentioned, but do not appear.
 * The following episodes were referenced in this episode:
 * When Oliver Queen destroyed the Book of Destiny in.
 * When Oliver brought back Sara Lance in, and his sister Thea Queen in.
 * Thea Queen destroyed all Lazarus Pits inbetween The Thanatos Guild and Leap of Faith.
 * A callback to occurs when Lyla visits Earth-74. Leonard asks Lyla how she'd like to die. Mick finishes the question by asking "By the flame or the frost?"
 * This marks the first ever time that Oliver appears but has no lines.
 * This episode had the least amount of main cast members with only three.
 * At some point in the episode, when the 2 supermen were fighting, Lois Lane said to Superman from Earth-96: Kal-El, remember who you are. Which is a reference to the same line spoken by Wonder Woman in the Justice League movie.


 * Much like the previous episode, several Earths designations reference important years tied to them.
 * Earth-75's Superman was killed in a way that visually referenced Death of Superman. Its designation is a reference to the Death of Superman storyline, namely the 75th issue, in which Doomsday kills Superman.
 * Earth-96 is inspired partially by the Kingdom Come storyline. Its designation is a reference to 1996, the year in which the original Kingdom Come story was published.
 * Earth-99 has a much older and harsher Bruce Wayne. Its designation is a reference to 1999, the year in which Batman Beyond, which also had an older Bruce Wayne portrayed by Kevin Conroy, was first released.
 * Earth-167 is meant to represent the Smallville universe. Its designation is a reference to one of that show's producers, Al Gough, who was born in 1967.


 * The scenes on Earth-96 contain multiple references to the Christopher Reeve and Brandon Routh Superman film series (as Brandon Routh is reprising his role as that specific Superman, rather than once again playing the general role of Superman).
 * John Williams' main theme for the series can be heard.
 * Clark says that he has previously battled himself. This references Superman III, where Superman turned insane and then split into a separate Clark Kent and Superman, before fighting himself.
 * Clark compares Jonathan Kent to his son, Jason, This references Superman Returns, in which him and Lois had a son of the same name.