Mona Lee Brock went into the office early that morning, as she always did, when she received a panicked phone call. The telephones in the crisis center were lighting up all over the place, as was common. This particular call was from a farmer’s wife. A day prior, the farmer had spoken to Brock and agreed not to hurt himself, but now his wife couldn’t find him. And she was afraid. Brock asked where the farmer kept his .410 shotgun. It was the height of the ’80s farm crisis, one of the greatest economic turmoils since the Great Depression. Drought...