"When the going gets tough, you don't want a criminal lawyer. You want a criminal lawyer."

That’s the advice Breaking Bad character Jesse Pinkman bestows on Walter White as the two stare at the strip mall office of Saul Goodman, a fast-talking lawyer with, at best, questionable ethical standards.

That second-season episode marks the beginning of a long attorney-client relationship for the three characters, one that endures as the show on Sunday enters its final season on AMC.