Marie Curie labored all her life to get out from under other people’s prejudices, jealousy, and misogyny. Nevertheless she won two Nobel Prizes.
Breaking Bad ends with machinations and betrayal, proving Walt is no better than the now departed Gus.
Breaking Bad ratchets up the intensity to another level, with Jesse and Hank facing some big tasks.
Breaking Bad gets grittier, and showcases some deep emotional development.
The hole Walter White is digging grows even deeper, as lie leads to lie, and crisis leads to crisis.