Breaking Bad veered into seriously dark territory this week, as a nearly successful train heist resulted in the shooting. Of an innocent child.

How will Walt, Jesse and Mike react to this unexpected, fatal development? In the following AMC trailer for Sunday's "Buyout," we see Mike quit the business and we listen in as Walt makes it clear that his ambitions go above and beyond a couple cooks and a few drug deals.

Walter White is like Jay-Z, readers. He's is an empire state of mind...

Elsewhere on the episode, Skyler will confide in Marie. But only to a certain point, of course.

Holding her adorable daughter and letting the tears flow, Skyler will scare the heck out of her sister with a few mysterious words...

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.