The murders of director Rob Reiner and his wife, Michele Singer Reiner, have rocked Hollywood, especially after their son Nick was arrested in connection with their brutal deaths. Us Weekly exclusively spoke to two experts in the area of parricide - the act of killing one's parent or relative - who discussed what might drive a child to murder their loved ones, as well as the signs and preventative measures to avoid such a tragedy. Denise Paquette Boots, a criminologist in the Public Policy Program at University of Texas at Dallas, and Dr. Kathleen M.