The first sign that Tennessee’s execution of Christa Pike had gone badly wrong came from Pike herself. She was strapped to a gurney inside Riverbend Maximum Security Institution. The drugs had begun flowing. Reporters were watching from behind glass. Then Pike looked at her arm, smiled, and asked a question that left the witnesses rattled. According to WKRN anchor Tori Gessner, Pike said her arm felt like it was about to burst open. She then looked at one spot and asked, “Does this happen like that?” Her spiritual adviser told her to relax. Pike answered, “I’m trying.” It only got...