There was a lot of overly convenient writing in this episode. Erica should have been screwed due to her sloppiness, but conveniently, her FBI chums are all with the Fifth Column! Yay! Anna waited for eons for Lisa to become fertile, yet Lisa 2.0 is fertile right outta the egg (otherwise, the V's are screwed). Yay! Child V's are capable of killing adults, despite this not being a usual feature of any species I can think of. Yay! Marcus illogically confesses and Anna illogically forgives him. Yay!
Truth. This was more fun than V usually is, but boy was it all contrived. My eyes nearly rolled out of my head when it was revealed that the FBI folks -- who had been investigating Erica for collaborating with the Fifth Collumn -- were part of the resistance all along! Huh?
Tyler might be back, if Anna decides to use his hide to dress a new offspring and pass him off as Erica's kid. That would be frakking hysterical.

And would torture the audience, too, just as we thought we'd seen the last of the guy...
Oh, that's evil. I liiiike it. I
liiiiike it.
(She would have to do something like that, wouldn't she? The show has never addressed how the Vs have been covering up all the Liveaboard deaths to date. Maybe they all get replaced by Visitor sleepers?)