What drives someone to violently turn against their own family? In a quiet Washington home, three generations of women lived together in apparent harmony - until one afternoon shattered their world forever. When 43-year-old Teri Suiter grabbed a knife and attacked both her daughter and her own mother, she left behind a trail of devastation and haunting questions. Through exclusive interviews and court documents, we uncover the chilling words spoken during the attack and the dark history leading up to this shocking act of family violence. What pushed this mother to the edge? And could anyone have seen the warning signs of the horror to come?