Drug overdose is reportedly the leading cause of death for Americans under the age of 50, but who is to blame? The award-winning book 'Dopesick: Dealers Doctors, and the Drug Company That Addicted America,' takes a deeper look into the national opioid epidemic. Author Beth Macy joins Cheddar to talk about holding Purdue Pharma accountable, the roots of the epidemic, and her recent op-ed.