How to jump the shark in one easy step: have Erica and Marcus get together. Elizabeth Mitchell slept with nearly everyone on the island on Lost, I guess she has it in her contract to do it on V too.
Kidding aside, this was a disappointing episode of the show. They are investing too much time in the old Queen, when this is not a character that is going to save this show. The V's need to be evil toward humans more, not fighting amongst themselves. We need to see Anna come down hard on the humans, and I think that is one of the reasons the ratings for this show are down: they refuse to pull the trigger on that. Not a bad episode, but not too memorable one.