Four days and 52 car fires later, the suspected L.A. arsonist is arrested. Former FBI hostage negotiator Brad Garrett joins the show to explain. 2012 is officially here - we look at campaign financing as the race to November heats up. Jerry Mayer, associate professor of public policy at George Mason University, joins the show. LA Times columnist Steve Lopez tackles death in his latest series of columns - he's on the show to talk about the complexity surrounding, in his words, "the fate we are all guaranteed." Find yourself torn between Jekyll and Hyde? External situations play a big role in our personalities, according to Sam Sommers. He'll explain the theory behind his new book, "Situations Matter." And Drew Tewksbury is here for new music Tuesday.