A baptism is a religious ceremony that invokes death, life, and rebirth. But there are different kinds of baptism. There's baptism by water, by fire ... or by blood. On the new 'Boardwalk Empire' (Sun., 9PM ET on HBO), all three take place -- at the same time. Straight-arrow Federal agent Nelson Van Alden (Michael Shannon) is after Atlantic City treasurer and bootlegging-mastermind Nucky Thompson (Steve Buscemi). Van Alden is all about rules -- and religion. At the same time, he's morally compromised. He's sexually obsessed with Margaret Schroeder (Kelly Macdonald), Nucky's mistress. In the past, Van Alden's guilt-ridden thoughts have resolved themselves in various odd ways ... including whipping himself as punishment for his "sinful" longings. On tonight's episode, things get even more violent. To Read More Click Here.