When Reign begins to hunt for Ruby in an effort to destroy what remains of Sam's personality within her, Alex will take up the role of Ruby's guardian. Meanwhile, as Kara and J'onn seek out Sam's mother in search of any information that might help them reach Sam within Reign, The Legion of Super-Heroes prepare to return to the future.
Superman: The Movie (elements of Lex's panic room under his mansion in this episode resemble Lex Luthor's lair in the movie)
In 307, it was said that there were six total Legionaries in suspended animation on the Legion ship including Mon-El. This episode, Imra says that there were seven Legionaries who were infected by The Blight and put into suspended animation, not counting herself, Mon-El and Brainiac-5. While nothing says that all of the infected Legionaries had to be on the ship, why put any of them on the ship at all? (It enabled Brainiac-5 to check and make sure The Blight was defeated in the future, as none of them would have shown signs of infection if they succeeded.)
Again, the question of the paradox caused by The Legion going back in time to prevent the incident that inspired them to go back in time in the first place, is completely ignored.
Brainiac-5 claims that there have been 783 uninterrupted Major League Baseball seasons since before the current year of his time. This is impossible, unless The Legion came from the year 3238, as the date given for the disaster that uprooted all civilization on Earth back in 310 was 2455. Even then, that assumes that the MLB got regular games up and running again within a year of society collapsing. (Maybe Earth had started colonizing space by that point, and the MLB continued playing on colony worlds?)
Alex's gloved finger doesn't quite hit all the buttons as she is keying in the code to reveal Luthor's mansion.
Patricia Arias must have been storing oily rags, gasoline cans and surplus US Army napalm in her attic for it to explode as quickly as it did after Reign was thrown into it.
I know Superman is once again off-limits to DC Comics Television shows, but you'd think Kara would remember there's ONE other person on Earth who might want to have a say in what is happening to what Kryptonite still exists?
Kara's suddenly losing all trust in Lena because of the Kryptonite issue is even more annoying and illogical than last week. (At least this time she apologizes and admits she was wrong.)
Give Lex Luthor's notorious paranoia and the security precautions we've seen at his other secret facilities, it seems highly unlikely his private mansion would only be protected by one keypad and a hologram with nothing to prevent him from being overheard. His arch-enemy does have super-hearing, after all. Never mind that the panel being destroyed shuts off the hologram...
Betty Buckley is quite frankly wasted in her role as Patricia Arias.
Imra says that the first Legionnaire to fall prey to The Blight was Chameleon. This is a reference to Reep Dagle aka Chameleon Boy/Chameleon - a shape-changing alien from the planet Durla in the classic Legion of Super-Heroes comics.
Brainiac-5 makes mention of his being a 12th level intellect. By way of a comparison, the average Coluan of the 31st Century in the original Legion of Super-Hero comics has a Level 8 intelligence. The average Earthling of the 31st Century has a Level 6 intelligence. Winn is said to have an Intellect of 1.42, making him nearly half-again as smart as the average human of the 21st Century. (It may be worth mentioning that Lex Luthor, in the DC Animated Universe, was also a Level 12 Intellect.)
Mon-El makes a reference to seeing J'onn in 1000 years. In the DC Comics Universe, Martians are longer-lived than humans but the exact extent of this is unknown. Differing accounts have said that they live on average for hundreds of years, thousands of years or millions of years. In the DC One Million future, J'onn would achieve oneness with his home planet and became an immortal guardian spirit of sorts.
M'yrnn makes reference to something called The Eradicator Project. In the original DC Comics, there are several beings called The Eradicator, all but one of whom had ties to Superman. (The unrelated one was a Flash villain - a vigilante with a touch that could melt anyone into protoplasm.)
The first Eradicator was the product of the technology of a dying race, who sent a number of containment devices into space in an effort to preserve their culture. One of these devices landed on Krypton, where it was found by the militant and xenophogic Kem-L. Following his example, the artificial intelligence within the device became devoted to preserving Kryptonian culture and eradicating anything that might bring danger to it. In time, it wound up in the hands of Superman, and would eventually evolve into a replacement during the time when Superman was presumed dead.
The second Eradicator was a robotic probe created by Supergirl's Fortress of Solitude in the New 52 Supergirl series to destroy Power Girl, as it sensed her to be an impostor of Kara Zor-El.
The third Eradiactor was a villain introduced into the Superman comics in 2017. It was a robotic probe with the same purpose as the original - protecting Kryptonian culture - but it attempted to kill Jonathan Kent, aka Superboy, seeing his half-human/half-Kryptonian biology as an abomination.
M'yrnn makes reference to someone named Kemler when discussing The Eradicator Project. This could be a nod to Kem-L, the Kryptonian responsible for creating The Eradicator in the comics.
M'yrnn also mistakes Kara for someone named Ursula. While this is a common Earth name, the way he pauses as he says it (Ur-su-la) suggests that maybe he meant Ursa La. Ursa was a notable Kryptonian criminal, most famous as Zod's right-hand woman and lover in Superman: The Movie and Superman 2 and the Superman comics written by Richard Donner and Geoff Johns.
The sequence in which Reign storms Lex Luthor's panic room is a tribute to the scene in Superman: The Movie where Superman enters Lex Luthor's hideout. Reign reaches the entrance the same way - spinning around very quickly to drill down to it. She then faces machine guns, flame throwers, and cryonic cannons, much as Superman faced machine guns, flame throwers and some kind of ice trap meant to freeze him to death. Even the panic room interior is something of a tribute to Lex's "home" in the movie, featuring a library and a private gallery of apparently stolen artwork.
Lena developed a Kryptonite aerosol weapon, which she uses against Reign.
Lex Luthor had a mansion that was hidden from satellites and passersby by an advanced hologram.
Lena says she was able to use high voltages of electricity to wake Sam up and force Reign back down.
Winn develops some kind of electrical net gun with enough force to knock Reign back several dozen feet. She is able to break free of the net, however.
One of the projectiles for Alex's new gun creates a net of fire.
(Brainiac-5 has just said that Winn has 1.42 Intellect instead of a mere Level 1.)
Winn: Wow. Thank you.
Brainiac-5: Hmm. It is I who is expressing gratitude for all of your help. With this gift.
(Brainiac-5 pulls out a jar of what appears to be dirt.)
Winn: What's this? Space dirt?
Brainiac-5: Earth dirt. But it is from the 31st Century.
Winn: Are you serious? (stammering) This is - this is... future dirt?
Winn: How did you - did Mon-El tell you about my dirt collection?
Brainiac-5: No, I ran a diagnostic of your personality, and calculated with a 98.7% certainty that you either collected dirt or New York Mets baseball cards. And judging by the last 783 uninterrupted Major League seasons, I figured dirt was more likely to hold its value.
Mon-El: Well, you would think that we would be experts at goodbyes now.
(Mon-El laughs nervously, warranting a backwards glance from Imra as she's leaving the room.)
Kara: It's no secret that I struggled when you got here.
Mon-El: Yeah, you weren't the only one.
Kara: But I can honestly say now, truthfully... I'm really happy I got to see you again. Witness the... the man that you've become.
Mon-El: It meant the world to me. To be back here with you. (speaking a bit faster) And uh-with, with everyone. To fight by your side.
Kara: I'm really going to miss your friendship.
(Mon-El makes the exact same face you'd imagine a man making when the woman he loves tells him she only thinks of him as a friend.)
(Imra asks Mon-El to go back and help Kara.)
Mon-El: You must know that I would never do anything to dishonor you.
Imra: I know. But I need a man - a partner - who will choose me with a full heart. Go back. Help her fight Reign. If you stay, then that's your destiny. If you return, I'll know you have no doubts.
(Supergirl freaks out when Lena tells her that she figured out how to make Kryptonite and created a super-charged batch to fight Reign.)
Lena: You know, I knew this is how you'd react. But James Olsen convinced me that we were on the same side. He thought you'd actually that you'd be grateful.
Supergirl: (scoffs) You think I should be grateful that you learned how to make the one substance on this planet that can kill me?
Lena: Thousands of things can kill me, Supergirl. And everyone else on this planet. Fire, but we don't go around banning bonfires or candles. Cars kill people every day, and yet we still have the courage to get in one every morning and drive ourselves to work. There is one element on the planet that kills a Kryptonian and you can't tolerate its existence.
Supergirl: You know, even if I did trust you, even if we were on the same side, this substance is so lethal to me that I can't risk encountering it by mistake.
Lena: Trust is hard for me too, Supergirl. But since we seem to need each other, we're just going to have to figure it out.
Supergirl: I owe you an apology. For being so hard on you. Without your Kryptonite, we wouldn't have stopped her. You just have to understand that when it's Kryptonite,...to me that's more than a gun or any of the other dangers you were talking about. It's personal.
Lena: It's personal for me too. It was a way to help my friend.
Supergirl: I do trust you Lena.
Supergirl: Why did you come back?
Mon-El: Uh. (laughs) Well, it seems that, ah, Brainy might have put a nanny-cam in Winn's dirt.
Supergirl: That's... upsetting.
Mon-El: So Brainy ran some calculations and mathematically the odds of you beating Reign in her new form exponentially increased if one member of The Legion comes back to help.
Supergirl: (smiling) Well, as always, I am thankful for Brainy's calculations.
James and Lena's relationship is confirmed to have become physical.
Lena has been living in a hotel penthouse for most of the last two years, having been uncertain that she would stay in National City.
James and Lena agree to hide no more secrets from each other.
M'yrnn likes Sidamo Guji coffee beans.
M'yrnn mistakes J'onn for someone named Rokar.
J'onn offers to help his father perform the Ta'ar Ka'riq (last seen in 315), but M'yrnn says he does not have the energy.
Imra says that Chameleon was the first Legionnaire to fall to The Blight, with six more following. They were placed in cryogenic suspension until a cure could be found. This was why Imra, Mon-El and Brainiac-5 did not wake the other Legionaries on their ship after they woke up.
Mon-El determines that the Legionaries in suspended animation are free of The Blight and they can now return home, their mission accomplished.
Braniac-5 says they have to return to their time soon, as with Imra away, there is no way of knowing The Titan Alliance (first mentioned in 313) has held in the revised timeline.
Kara makes reference to the cape-fighting tricks that Mon-El taught her in 315.
According to Braniac-5, Winn has a Level 1.42 Inellect, compared to his Level 12. (Braniac-5 is later revealed to have been lying about Winn being a 1.42.)
Winn has a dirt collection. Calculating this, Brainiac-5 gives him a sample of Earth dirt from the 31st Century as a thank you present for his help.
Coluan embraces in the 31st century are quite different from human hugs in the 21st Century. Either that or Brainiac-5 is unfamiliar with how embraces of any kind are meant to work.
Mon-El tells Winn to tell J'onn that he will see him in one thousand years. Winn thinks Mon-El is joking but Mon-El's expression says otherwise.
Patrica Arias is revealed to live on a farm outside National City. This location was first seen in 307.
Lena reveals that she hid Ruby in a secret mansion that only she and Lex knew about.
The code to reveal The Luthor Mansion is 052627.
Patricia Arias has had issues with a neighbor named Francis Pierce trying to steal her medication.
When she was 10, Sam began doodling the same design over and over on her books. When she was punished for this, she drew it onto the wall of her bedroom. The design is revealed to be Reign symbol.
Patricia Arias admits that she was a terrible mother, kicking Sam out of the house when she got pregnant as a teenager. She tells Supergirl and J'onn that she knows about having a granddaughter, but has never met Ruby.
Mrs. Queller was a neighbor of Sam's who helped her out by picking Ruby up from school and taking care of her. She was mentioned in several earlier episode but makes her first physical appearance here, being revealed to have been staying with Ruby in The Luthor Mansion.
The are 5,000 steps from wing to wing in The Luthor Mansion. It has an indoor pool.
The dining room of the Luthor Mansion has a rather severe looking portrait of Lillian Luthor. Mrs. Queller says the eyes follow you like The Mona Lisa, but not in a good way.
Alex lies to Ruby about not knowing what is wrong with her mom.
J'onn say that he has been preparing Martian medications for M'yrnn, but that his father still feels depressed and useless with his telepathy dampened. He notes that M'yrnn's memories of the past are clear but his present thoughts are chaotic.
Reign's presence is now foretold by the immediate withering and death of nearby plants, as it was with Pestilence.
Despite not having met Ruby, Patricia still has a picture of her and Sam on her mantle.
Reign is also confirmed to have Purity's sonic scream power, which is strong enough to cause J'onn's ears to bleed at close range. While it doesn't make Kara bleed, it does cause her intense discomfort and leaves her deafened for a short time.
Reign mortally wounds Patricia Arias.
Brainiac-5 planted a bug in the dirt that he gave Winn, so that he could keep tabs on Supergirl and her allies in The DEO.
Brainiac-5 says that Supergirl and The DEO only have a 51% chance of defeating Reign now that she has the powers of all three Worldkillers. He says their odds jump to 88.8% if just one Legionnaire remains in the past to help them.
Brainiac-5 says that Supergirl is stronger than any single Legionnaire.
Patricia Arias dies, begging Supergirl to tell Ruby that her grandmother loved her and to tell Sam that she's sorry for everything.
James tells Lena about Patricia's death and tries to persuade her to tell Supergirl that she figured out how to synthesize Kryptonite, despite Lena's fears that it will kill what little trust remains between them.
Young Frankenstein is one of Alex's favorite movies of all time.
Ruby figures out that Alex is lying to her.
J'onn says that Reign is as soulless and merciless as a White Martian. He admits, however, that some White Martians, like M'Gann, proved capable of mercy and compassion. He then remembers that M'yrnn survived only because he was able to talk the White Martians into sparing him.
M'yrnn makes reference to something called The Eradiactor Project and mistakes Kara for someone named Ursula and refers to someone named Kemler.
M'yrnn recalls that he did not really persuade The White Martians of anything. He knew that they held a certain series of scrolls as sacred. As the only person who had knowledge of the secrets of those scrolls, M'yrnn forced the White Martians to spare him lest that knowledge be lost forever. In short, he abandoned his beliefs to appeal to theirs.
Imra tells Mon-El to stay in the 21st Century, saying that she knows he has done nothing wrong or behaved dishonorably but that she wants a partner who will chose her with a full heart - for love, not duty.
Lena reveals that she can make Kryptonite to Supergirl. It goes as badly as she predicted, with Supergirl saying she no longer trusts Lena at all and sees her as an enemy.
Reign overhears Ruby's voice when she uses Alex's phone outside the Luthor Mansion to try and call her mom.
Supergirl tries to appeal to Reign by reminding her that her purpose is to punish sin but that Ruby is an innocent who does not deserve to die.
Mon-El crushes the Kryptonite into shards and uses them as make-shift ammunition to take down Reign.
Reign is moved back to Lena's private lab so Lena can work on a cure, with Mon-El putting a futuristic power inhibitor on her.
Mon-El says that he intends to stay in the present until Reign is defeated, one way or the other.
M'yrnn's memory loss is getting worse, not remembering his conversation with Kara and J'onn about The White Martians or that he told J'onn earlier about his discovery of mocha.
Alex admits that she lied to Ruby and promises to protect her and be honest in the future.
Lena tells Kara that the only reason she is working with Supergirl to save Sam and that she's lost all reason to trust or respect Supergirl after she had James break into her private lab.
The final scene of the episode shows a woman named Tanya stealing a journal filled with images of Reign, being told to stop "In the name of Coville" by another man. This is likely a reference to Thomas Coville - leader of The Cult of Rao - last seein in 312.
Patricia Arias' farm outside of National City.
Lex Luthor's Mansion.
Supergirl apparently keeps her promise to Patricia and tells Ruby about her grandmother off-camera.
The Bottom Line
Good acting salvages an otherwise annoyingly written episode. It's clear the writers intend to drive a wedge between Kara and Lena because there is no reason why Lena should not have realized Kara is Supergirl at this point unless Lena is playing dumb to make Kara feel guilty about lying to her. The performances suggest this to a degree, but it doesn't excuse how horribly out of character it was for Kara to ask James to betray his girlfriend last week and I fear the lesson Kara will take from this is that she can't trust James anymore. Still, between Carl Lumbly's frightening accurate portrayal of an Alzheimer's patient, Chris Wood's silent suffering as he is torn between love and duty and Melissa Benoist managing to portray everything except Kara's anger convincingly, this is a surprisingly solid episode.