We didn't even need to hear the words Death Star in Lonnie and Luthen's discussion to know what Lonnie was talking about. Of course, we know this is the huge bit of information that even those working in the ISP didn't know. On the surface, Luthen killing Lonnie feels like typical ruthless Luthen of not taking any risks. Although this was also an act of mercy on Lonnie. He wanted to make sure his family was safe and Luthen knew this. Luthen killing Lonnie allowed Lonnie's family to be safe.
Man, the showdown between Luthen and Dedra was what we were looking for. Of course, this comes after Luthen mentions we used up all their perfect. The manner is how were he and Kleya were getting out retaining what they learned without being tracked. Luthen's first sacrifice was for Kleya. You could argue she was right that she was the one better off at destroying the evidence. Though this showed a bit of Luthen humanity because he didn't want Kleya to be the one. But man Luthen knows what to do because Dedra thinks she got him cornered, but Luthen knows at this point him being dead is an aid for the Rebellion. As we know, the Empire will interrogate and drop every bit of information out of you if you are still alive. The saying Luthen won't get to see the sunrise hits hard in episode 10, but he knows what needs to be done.
Dedra is beyond screwed. ISP was under suspicon of her, but now the man she has been searching for is in her grasp and Luthen slips away. You can see it as she is aggravated with the hospital staff. She needs Luthen to talk, but he is literally barely alive. Dedra lost and now is arrested with Krennic questioning her. This actually draws a similarity to the incident on Ferrix when Dedra is questioning Syril. Syril wanted to do justice for the Empire and arrest Cassian. Here Dedra wants nothing more than to capture Kleya and Luthen, but unsurprisingly, the Empire nows views her as a liability given what she has shown. The moment Krennic mentioned Lonnie logged in as her to view the Death Star plans, she was beyond fukked. Although given that she knew about the Death Star, there were bits she was doing unauthorized. More than likely, Syril's death had an impact on that. She very much acted like Syril and now she belongs in the same imprisonment that Cassian was in S1. Quite ironic.
Kleya and Luthen's past being shown in parallel to her infiltrating the hospital was so good. Luthen seemed to be working with the empire originally, and he saw the horrors and by the episode's name of made it stop. He finds Kleya with her, you could say the foundation of the rebel alliance was its true origin. He was basically training her in all the ways from the start. There were bits where you could see they cared for each other like a father and daughter. Though much like Luthen she had to do what needed to be done. But for her to be the one that had to kill Luthen, Man that was cruel af, and you knew that hurt her.
Cassian really serves as the bridge between Luthen's group and the alliance. He is fully aware of Luthen's faults. There is a reason the main rebellion doesn't have a good image of him. Though the moment that Kleya tries to contact him, his sense of urgency heightens. A bit of shown where Cassian has grown. He knows that he has to break protocol, but everything he does to ensure that the Empire can't find out about Yavin. He was right about that Kleya needed to be alive because her connection to Luthen was unbreakable and would have spoken more volumes if she were alive.
No surprise Cassian is under questioning. Though the moment Mon clears him access to see Kleya you get the sense she really wants to believe him. As she knows how much Luthen has done for the rebellion. Cassian's mention on how Bail and Luthen would really have gotten along made me wonder. If he interacted with Luthen as much as Mon did, perhaps he would have accounted for Luthen's intel with more sense of urgency. He might have stayed on Yavin and his presence in the rebellion would have been huge. Sad case of what if.
Now it leads up to Rouge One. Though seeing Bix back on the planet where B2 was around with Cassian's child. I can only hope that spells a good ending for them.