When parents kill: Forensic psychiatrists examine the motives behind unthinkable murders

By Chelsea Bailey, CNN (CNN) — Gunfire shattered the silence of the Cedar Grove community in Shreveport, Louisiana, just before dawn Sunday. Moments later, a mother and her two children scrambled out of a window and onto the roof of an unassuming gray and white home on West 79th Street and frantically dialed 911. “Units