Why would a woman kill an unarmed neighbor who knocked on her door? The all-new 20/20 "The Neighbor From Hell" premieres Friday, April 3rd at 9/8c on ABC Network. Stream on Disney+ and Hulu. Subscribe to ABC News on YouTube: https://abcnews.visitlink.me/59aJ1G ABC News Digital is your daily source of breaking national and world news, exclusive interviews and 24/7 live streaming coverage. Download the ABC News app for the latest headlines and alerts: https://abcnews.go.com/devices Watch 24/7