A murder suspect's brother under scrutiny. Breakthrough in parents' quest for answers. And should jurors question witnesses?

Listen to this week's episode of the Dateline: True Crime Weekly podcast with Andrea Canning. Three months after the husband of a woman who went missing in Spain is charged with her murder, investigators have questions about his brother, too. Years after a young woman's death in Pennsylvania, her parents persuade local officials to take a second look at how she died. And the judge from the Jason Chen murder trial on why he allows jurors to question witnesses during trial.