The fourth season of Supergirl began on Sunday, October 14 at 8 pm and 7 pm at the center of The CW with an episode entitled American Alien.
The new DC Comics series, Supergirl, will arrive in the UK on Monday, October 22 at 8 pm on Sky One.
After the broadcast, the last episode of the fourth season will be available for broadcast on Now TV.
Here are how many episodes there will be in the fourth season of Supergirl in The CW and Sky One.
The fourth season of Supergirl will have 22 episodes.
This coincides with the number of episodes of the Arrowverse programs The Flash and Arrow, which also have just started their latest series of 22 episodes.
The second season of Supergirl also had 22 episodes, while the first season had 20 and the third season had 23.
These new episodes bring the total number of episodes of Supergirl to 77.
WHEN DOES SUPERGIRL SEASON 4 COME OUT?
The following episode titles have been released so far:
DATE OF PUBLICATION OF SEASON 4 OF SUPERGIRL, CAST, PARCEL, TOW
Melissa Benoist (who plays Linda Danvers / Zara Zoe-El / Supergirl) has a lot of anti-alien feelings at the beginning of Season 4 that Supergirl will have to deal with them.
He added: "I think his main premise is that fear itself is a villain, and can hope conquer it?"
The fourth season of Supergirl is inspired by the story of Superman, Red Son, and will see Zara fighting an alternative Soviet version of Supergirl.
Co-director Jessica Queller described the new series as a "tribute" to Red Son, which she described as: "What happened if, like a baby, Superman landed in Russia and became a hero there instead of in America?"
ARROWVERSE CROSSOVER 2018 AIR DATE, SPARE, TOW, PLOT
A series of new villains will also be presented, including Agent Liberty (played by Sam Witwer), who is the leader of an extreme "human first" group.
There will also be Manchester Black (David Ajala), who will be the head of a team of superheroes called The Elite, and Mercy Graves (Rhona Mitra), former bodyguard of Lex Luthor.
The program will also feature the first transgender superhero of television in the form of Nia Nal (Nicole Maines).
According to IMDB, episode eight of the fourth season will be part of a three-part crossover with The Flash and Arrow.
Supergirl begins on Monday, October 22 at 8 pm on Sky One