First, great show overall. I love that it's suspenseful and a good story that the family can watch together without it being too "adulty." It proves a show can be good while not having to resort to more adult themes. Not that I'm against those, just nice is all.

The flaw: Dr. Smith and her whole story. I absolutely hate her story and the writing behind it. It almost, ALMOST, ruins the show for me to be honest. She's literally one of the worst written characters I've ever seen. How is a show that's written so well, mess up this one character so bad?

The only other flaw, which is more annoying than anything else, is the logic behind some of the characters. For example, these are extremely intelligent people, yet sometimes they go off on their own and you're like, why are they alone? Or, why are they bickering in a time like this? Little things like this are more annoying, but the show has to have drama I guess. The Dr. Smith storyline though, that's unforgivably awful.