In tonight's episode, Hal and Tom had to confront feelings of former loves, even though they felt they had moved on -- Tom wound up yelling his former wife's name of Rebecca while arguing with Anne over the care of Weaver, while Hal literally had to confront his former love when Karen returned, de-harnessed.
(It was one of the rare times Tom has invoked Rebecca's name on the show and it was jarring, and seemed a bit out of place since she rarely is brought up.)
Tom is able to overcome those feelings, and while he and Anne continue to battle over the course of the episode, they rise above it and probably become stronger because of it. Hal, meanwhile, continues to insist on true, real feelings for Maggie, who continues to resist, but he becomes very confused about his feelings when he discovers Karen in the woods.
No matter what Ben says about her true intentions, Hal wants to believe she is who he remembers. It winds up being up to Maggie to find out who she really is.
Either out of subconscious love for Hal or because of a need to protect him, Maggie confronts Karen with two guns. Karen, of course, still overpowers her, almost gleefully. While Ben is ashamed of his alien superpowers, Karen embraces them.
Maggie, in a stunning turn seen at the end of the episode, convinces Ben to leave with her, while making it seem like his idea. (Turns out Ben was right to mistrust her. If only he believed himself.) It turns out the alien overlords know how important Ben is to the Skitter resistance.
In fact, the resistance is confirmed by a returned Pope. While it's not confirmed Red Eye is the leader, the Overlord aliens are clearly concerned with Ben's potential role in it.
Pope isn't the only one recovering in medical in tonight's episode, as Weaver almost dies from the venom of the harness bite as speculated in last week's episode.
He's saved by a fairly complicated medical procedure that many of the second characters had a hand in developing. And while he appears to be back on the mend, unless next week's episode time jumps another two weeks as tonight's did, Tom will likely still be in charge as the group prepares to head back on the road to Charleston.
We never see Ben or Karen's spikes until the moment when they kiss -- Ben's spikes are usually present in most scenes so that the audience, and other characters, never forget what he is. But producers wisely choose to hide them until the moment his and Karen's light up at the same time.
Anne is quite busy in tonight's episode, dealing with more than a few critical patients. Luckily they're stationed in a hospital...
"You risked pulling out your stitches. Possible infection. Maybe getting shot again. You know what that means. You like me." -- Hal
"Typical guy. Making it all about you." -- Maggie
"I'm sure whoever that was before was a wonderful person. But that's not Karen." -- Ben
"Our best chance of survival is his survival." -- Tom
"We're going to have a little girl talk, you and me." -- Maggie to Karen
"How much fuel did we burn saving my ass?" -- Weaver