Pennsylvania Man Accused of Killing Eight People Had Controlling Influence

• A Pennsylvania man is accused of killing eight people.
• Police say the man exercised significant control over his family.
• The suspect's stepmother revealed no signs of trouble in a video call hours before the incident.
• The incident involved the suspect's husband and their 3-year-old son at a Poconos resort.
• The stepmother reported the chilling final call with the family before the attempted murder-suicide.