Dave Davies

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.

Kirk Wallace Johnson tells the story of a bitter conflict that arose along the Gulf Coast when Vietnam war refugees began trawling for shrimp in the area. His book is The Fishermen and the Dragon.

The First World War, which lasted from 1914 until 1918, ushered in a new kind of mechanized warfare. Bodies were maimed, burned and gassed, and as many as 280,000 combatants were left with ghastly facial injuries. Medical historian Lindsey Fitzharris says soldiers who suffered facial injuries were often shunned in civilian life.