My emphasis, because that's how he'll get it back. There's nothing Frost knows that Chuck doesn't know, except that he is a better man than Alexei. That Sarah is lucky to have him, because they have fallen in love. And Frost never, ever would. One broken couple, one perfect couple. Moms are just people. So it solves the Frost/mommy issue at the same time it solves the Intersect problem and, obliquely, the larger blonde she-male problem, which were all already the same problem, which is why these three episodes exist. Three weeks ago I was pretty sure this was going to be my favorite non-Bryce storyline, because I hoped it would do this, and it did exactly this, and it did it well.
Since Alexei doesn't know that Chuck is Frost's son yet, and that Chuck would not let her get hurt no matter how confusing and hurtful she is, they can totally play hardball with her safety and scare him to death. So while they're worrying about that, Casey and Morgan run into each other in the ductwork and do some explaining of everything so far. Morgan is hiding or maybe trying to save Jeffster (why?) and Casey is looking for the override so they can kill all the bad guys with computer guns, and Morgan gets a gun again, points it at his head again, Casey gets to hiss muzzle! again. Only this time, Morgan's wearing workout gear, making it all fabulous again. Turns out he's a guy, under all those cheap suits.
Carmichael threatens Frost with "very bad things" and Volkoff's amazing reply is to wheel out a giant beeping Sputnik-looking thermite bomb that is terrifying and will apparently raise the temperature to 4000 Fahrenheit degrees: "Metal will boil. I'm gonna drop it down the elevator shaft, and it will incinerate every single one of you, including my beloved Frost." Alexei has won the threatening game for sure.
Morgan steps on a bunch of tacks and gets caught by bad guys, but then Casey saves him, and shoves Morgan into a closet with the stolen phones, which takes his mind off things, but then they take Casey, so we went from two good guys to no good guys. Chuck and Walker bring out Frost and apologize for starting shit, and then Alexei makes the sensible call of pointing a gun at Chuck's head, so Frost has to admit finally that Chuck is her son. Alexei does this sort of triple-take thing that was fairly cute as performed by the ensemble, but I can't figure out a way to describe it that's funny and not annoying, so let's move on.