Sneak Peek: What makes a murderer? These investigators might have the answer.

Nearly 30 years ago, James Bernard Belcher was sentenced to death for raping, strangling, and drowning 29-year-old Jennifer Embry. Recently, he was given a second chance: a resentencing, this time with new evidence unearthed by a mitigation specialist. These life-history investigators seek to contextualize a defendant’s violent crimes, often by surfacing childhood traumas. On the latest episode of Apple News In Conversation, host Shumita Basu spoke with Maurice Chammah, a reporter for the Marshall Project, about shadowing one specialist as she excavates Belcher’s past in a bid to spare his life. Below are excerpts from the interview.