Do you think the alien Tom is seeing in his dreams is important and in what way?
That's a puzzler.
Tom's direct-view vision was his late wife, Rebecca; yet the mirror image of that hallucination was an eight-limbed alien lifeform. Maybe the messenger didn't anticipate the presence of the mirror, and Tom got a glimpse of something he was not supposed to see. Can a hallucination be reflected?
They went to the trouble of having Ben make a police artist-type sketch of the alien. Cochise quickly identified the alien as Dorniya, the original species the Espheni had mutated into Skitters, now extinct in their original form. (All police work should go so smoothly.)
Is the message there that Rebecca was not killed but turned into a Skitter who is now psychically communicating with Tom? Seems like an explanation too simplistic, not to mention far out, to be correct.
I'm guessing that the boy who was Skitterized but retained enough of his humanity to commit suicide out of remorse for accidentally shooting his sister, is somehow tied into this story element. That might explain the siblings' extremely short lifespans in the series.
Weaver, whose daughter, Jeanne, also retained shreds of her humanity after being turned into a Skitter, seems to be the only person who recognizes that all Skitters are not the complete monsters they are generally seen to be. That wouldn't apply to the mutant army that was being generated by the Skitter soup kettle in the factory the humans destroyed. Those babies were pure Skitter, through-and-through.
Will Tom eventually be reunited with Skitter Rebecca? Will she, Tom and Anne live happily ever after together? Do I foresee a post-
Falling Skies remake of
Three's Company?