'The Walking Dead' preview: A bad bus ride, plus Father Gabriel's biblical clues

You knew when Army-guy Abe got manic about leaving the church and heading for D.C. that this was not going to go well and indeed, it seems like it will not. We'll get the details Sunday night in "Self Help," but previews and clips show that the church bus they commandeered from Father Gabriel seems to making good time on the highway to hell rather than heaven. In the official sneak-peek, Glenn and Maggie are passing time on the bus, sweating Dr. Eugene about how long his "classified" cure is goi...