The season finale of Weeds involved a lot of back and forth, with Silas feeling awful that he called Jill in to NYC and Nancy both fighting and bonding with her sister.
They eventually recovered their stolen weed from Demetri's crew and returned it to Heylia, while Doug managed to finagle his way out of the SEC problems. Andy then came up with a way for everyone to live happily ever after:
They bought a compound in Connecticut, gave Silas his own grow room and had Stevie raised by both Nancy and Jill. We also saw that Shane was taking classes to be a cop, unbeknownst to his family. The episode concluded with Nancy giving a toast about everything working out okay - and then with a rifle aimed at her head and gun shot going off as the credits rolled.