A gruesome video on a stolen SD card exposes Brian Steven Smith's secret double life.
Yaser Said speaks about the night he fatally shot his teenage daughters near Dallas, Texas.
Denali Brehmer agrees to kill her best friend for a man she met online offering millions for murder.
Bo Pete Jeffrey tells a different story about the brutal beating and murder of his wife.
Tyler Hadley discusses how he, as a troubled 17-year-old, bludgeoned his mother and father to death.