Dave Davies

As a Republican operative, Tim Miller worked with extreme right-wing media outlets and fed the populist outrage that helped radicalize much of the GOP voter base. His new book is Why We Did It.

Author Beth Macy and harm reduction specialist Michelle Mathis talk about grassroots and community efforts to address the opioid crisis. Macy's latest book is Raising Lazarus.

Veteran cold case investigator Paul Holes talks about pursuing killers and the emotional toll of obsessing over crime scenes and talking to victims of horrific crimes. He has a new memoir called Unmasked.