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I’m just going to come right out and say it…this episode, and the dynamic between Kara and Alex, basically broke my heart. I think there was more they could’ve done to highlight the strong relationship between these siblings, and I feel like they didn’t do it the justice they should’ve. But we’ll get to that more later, right now let’s dive in to the latest episode of Supergirl!

Source: CW Supergirl
After getting hot and heavy, Mon-El wakes up in Kara’s bed, but with no Kara next to him. As he dresses and watches the news for updates on Supergirl’s good deeds, Kara flies through the window and greets her new beau with a bouquet of flowers. He gasps and compliments her on being such a gentleman. (Which honestly made me giggle a bit.) While they’re being couple-y and adorable, Kara admits that after attempting to kiss four different human boys on four different occasions, she’d broken their noses in her over-eagerness. She asks if Mon-El would be willing to keep their relationship quiet for a while, and explains that she wants to have something that is entirely hers. Unfortunately, when they arrive at the DEO he immediately – and very loudly – announces their relationship, much to Kara’s annoyance.
J’onn tells Kara that because she’s dating a co-worker, she has to report to HR to fill out paperwork. Alex, who finds it all terribly amusing, teases Kara about having to attend a sexual harassment seminar. Winn interrupts to tell them that after weeks of radio silence, CADMUS has made themselves known. After taking out the caravan of CADMUS agents, Kara and J’onn investigate the lead-lined semi trailer they were protecting. They expect to find some sort of weapon, and instead they recover Jeremiah Danvers, Alex’s father.

Source: CW Supergirl
He receives quite the reception when he limps into the DEO, and while Alex looks over his injuries, Mon-El voices his concern that finding Jeremiah was rather convenient. Jeremiah tells him he’s right to keep his guard up, because CADMUS has built a nuclear fusion bomb using the heat vision radiation they’d mind from Kara when they captured her. They intend to use the bomb to destroy National City, and rid the world of Supergirl. Pan to a CADMUS facility, where we see Cyborg Superman putting what looks to be the finishing touches on the bomb. Lillian approaches him and proudly gloats about how they can’t be stopped.

Source: CW Supergirl
The group gathers around winn and informs him of the bomb – Jeremiah helpfully offers that if Winn scans for the radiation of Kara’s heat vision, he could find the weapon. Eliza arrives, and as she reunites with her husband, Mon-El pulls Kara aside to tell her just how suspicious he finds all of this. Kara tries to ease his concern by inviting him to a family get-together. She asks that he get to know her adoptive father, and he resignedly agrees. That evening, as Kara and Alex set the table, Jeremiah jokes about the last time he’d seen them do that. Hint: It was because he’d grounded them from their cellphones, and they were trying to suck up. Maggie interrupts their playful banter when she arrives.

Source: CW Supergirl
She gives Eliza a much-too-friendly hug, which is concerning for me, as a fan. Did they meet already? Why didn’t we see that…I would’ve LOVED to see that! Regardless, Alex introduces Maggie as her girlfriend, to which Jeremiah responds (And I’m paraphrasing here): “There is no man on Earth good enough for my little girl, so it makes sense that she chose you.” After Mon-El shows up, he, Kara, Maggie, and Alex sit in the living room and enjoy each other’s company. While Jeremiah and Eliza stand to the side and admire their girls, he apologies for not being there for her. He tells her that now that hes back, they can pick up where they left off, but Eliza tells him that they can’t. She explains that they’ve spent so much time apart, living drastically different lives, that they’re essentially new people, and need to re-learn each other.
J’onn interrupts the moment by walking into Kara’s apartment and apologizing for being late. As they all stand around chatting, Jeremiah mentions that the things he was forced to do for CADMUS changed him, but he’d like to help them make the world a better place by re-joining the DEO. Mon-El tries to be polite to Jeremiah, but instead relays his thoughts and frustrations about everyone being overly accepting of the man who’d just spent over a decade working with CADMUS. His claims put Alex on the extreme defensive, and causes an uproar among the rest of the guests. Kara pulls Mon-El aside, and the two get into a heated argument about the Daxamite ignoring her requests and being disrespectful.

Source: CW Supergirl
Jeremiah walks in and offers to escort Mon-El out, something that Kara readily agrees to. On he outskirts of the apartment, Jeremiah threateningly notifies Mon-El that he knows the truth about the Daxamite, and that Kara probably wouldn’t like it if/when she found out. Later, Mon-El asks Winn to meet him at the alien dive bar, where he convinces the tech wizard to help him keep an eye on Jeremiah. After Winn agrees, he tells Mon-El to do him one favor: Be good to Kara. Lyra interrupts their bromance to say hello to her boyfriend, before sauntering off to enjoy the bar.

Source: CW Supergirl
At the DEO, J’onn is giving Jeremiah a tour of the facility, and Jeremiah tells him he’s done wonders with it. J’onn credits Kara and Alex, before handing the Danvers man his DEO access card. They part ways with the promist to meet in the med bay later. Instead of heading to his new work station, Jeremiah enters a control room to look through their database, and Winn walks by to catch him snooping. Winn and Mon-El corner Kara in one of the training rooms and convince her that her adpotive father is up to something Sketchy. When she confronts him, he admits that he wanted to catch up on the things his daughters had been doing since Supergirl came out. Alex, offended that they would accuse him of treason, reprimands the trio for their behaviors.

Source: CW Supergirl
A while later, Kara finds Alex in the labs and tries to explain that she understands what Alex is feeling, but because of how dangerous CADMUS is, they owe it to themselves to look at every possible angle. Alex says Kara sounds like Mon-El, and she doesn’t need to back everything he does. Kara retorts that it’s not about Mon-El, it’s about the truth. She finds it suspicious that he didn’t just ask them about their previous cases. in a fit of anger, Alex tells Kara that it’s obvious the Kryptonian has chosen her side. Kara tries to reason with her sister that it’s not about sides, but instead about protecting her loved ones. Alex seethingly states that Kara is either part of the family or not. The Girl of Steel tries to relay that Jeremiah is her father too, and Alex yells at her to act like it, before stomping away.
Winn rejoins Lyra at the dive bar, where the Starhavian (??? Is that the proper term for aliens of that planet?) is teaching him to play darts Mon-El shows up and is obviously pouty about seeing the duo so lovey-dovey. While Lyra steps away to let them talk, Mon-El asks Winn for advice about women It’s an interesting reversal considering past episodes, and one that proves fruitful. Winn explains that Kara doesn’t need a protector or someone to show her off, she can do those things just fine by herself. All she needs is someone to listen to her and ask her what she wants. Again they’re interrupted, though this time it’s by an alert on Winn’s phone – CADMUS is moving the fusion bomb.

Source: CW Supergirl
Kara, Mon-El, Alex, and a handful of agents arrive at a warehouse to retrieve the weapon, with Jeremiah overseeing the mission. When they infiltrate the building and find it empty, everyone grows suspicious. Jeremiah walks away from the command center, and J’onn grows increasingly angry that he can’t seem to read his mind. The martian tracks Jeremiah to the control room, where it’s obvious that he’s siphoning information onto a hard drive. J’onn tries to stop him, only to learn that Jeremiah’s allegedly injured arm had been cybernetically enhanced. Winn runs in and sounds the alarm, and the consequence for doing so is getting knocked out by Jeremiah.

Source: CW Supergirl
J’onn expresses his anger and hurt at the betrayal, and as much as Jeremiah pleads with him to let this go, he can’t. J’onn attacks him, and the two exchange heavy blows. Jeremiah manages to get the upper hand and knock him out, before retrieving the hard-drive. Whatever information he’d been stealing had finished downloading, and before he broke free, he destroyed the mainframe. When Alex, Kara, and Mon-El return, they head to the med bay to ensure Winn and J’onn are okay. After the director wakes up, he explains Jeremiah’s arm, and after they worry about locating him, Winn admits that he planted a tracker on Jeremiah.

Source: CW Supergirl
In a forest that I assume is on the outskirts of National City, Jeremiah meets with Lillian and cyborg Superman. He gives them the drive, but their chummy moment is interrupted when Kara and Alex arrive. To ward away the Girl of Steel, they blow the nearby bridge-tracks, which puts an oncoming passenger train at risk. While Kara flies to stop it, Cyborg Superman knocks over a tree, providing an escape for the three CADMUS agents. As kara works to weld the tracks back into place, Alex cuts them off and manages to get Jeremiah on the dangerous end of her gun.
Kara is forced to hold the one of the track-rails on her back, as she wasn’t fast enough to completely weld it. The train drives over her, and with all the strength of…well…a Kryptonian, she keeps it steady. Alex asks Jeremiah how he could betray everyone she cares about, and tells him that she plans on bringing him in as a prisoner. He tells her that he refuses to go in alive, and explains that everything he does is for her. He tells Alex that she’s the best part of him, and when she can’t pull the trigger, he uses her hesitation to run. (Can I just say…Chyler Leigh’s penchant for like…sad, or intensely distressing scenes is…honestly it’s phenomenal.)

Source: CW Supergirl
Winn meets with Kara and Alex at the DEO; the sisters admit to losing Jeremiah, and Winn understands that they mean it in more ways than one. J’onn asks Winn to get everything back online, and demands to know what information Jeremiah stole from them. He asks how the Danvers sisters are holding up, and Alex deflects by instead going to talk to her mom. Kara admits that she’s worried what this betrayal will do to the people she cares about, but J’onn assures her that this will make them stronger, as a group…and honestly, maybe even as a family.

Source: CW Supergirl
At Alex’s apartment, Maggie finds her girlfriend drinking alone. She asks what happened with Jeremiah’s first day, and Alex breaks down in her arms. She comforts the woman, understanding that something serious had happened, but also understanding that then was not the time to push it. Kara is wrapped up in a blanket, curled up on her couch. Mon-El knocks, and when he asks if she’s okay, he notices that she’d been crying. He starts to talk and ask questions, but instead only requests that Kara tell him what she needs. She asks that he just be there with her, and Mon-El wraps her up in his arms, before asking if there’s anything else she needs. She tells him she wants to simply wake up next to him. The soft moment is interrupted by a call from Winn who, in a panic, tells Kara that Jeremiah took the National Alien Registry.
Kara relays the information to Mon-El, who asks what they should do. She stands, centers herself, and tells him “We get up.” Meanwhile, At the CADMUS facility, Lillian and Jeremiah watch on as what looks to be some sort of space ship, is being assembled. He informs her that they had a deal, and she responds that soon the Earth will be free forever.
Now…I really and truly only had one major problem with this episode…Kara and Alex. We’ve seen just how close these sisters are, and how far they’ll go to protect each other. While I understand that having a tender moment with their respective loved ones is important, I personally felt it was more important to their characters that Kara and Alex have a moment to talk about their HUGE fight in the labs. I can only hope that it’s a conversation we’ll get to see next episode. Tune in every Monday to the CW, to catch up on the latest episode of Supergirl!