There have been developments in the case of Joe B., a former high school principal who was convicted of his wife's 1985 murder based largely upon bloodstain-pattern evidence that has now been discredited. Now 78 and in frail health, Joe is hoping for a new trial....

There are certain rules law enforcement must follow when setting up sobriety checkpoints or DUI roadblocks, but the Tennessee highway patrol failed to follow them in a 2012 roadblock in Harris County. Therefore, the Tennessee Court of Criminal Appeals found the...