911 call records terrifying moment woman attacks former therapist

Katherine Brazeau stabbed the California therapist and still had the knife in her hand when Fullerton police fatally shot her, the district attorney said.
1:20 | 03/01/19

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Transcript for 911 call records terrifying moment woman attacks former therapist
Tom? Marci, thank you. Now police releasing body cam video of a former patient armed with a knife threatening to kill her therapist. Officers forced to make a slit second life or death decision. Clayton Sandell has the details. Reporter: A panicked 911 call sends officers racing in. I've been stabbed! Okay, who stabbed you? Reporter: The voice on the line -- a mental health therapist in Fullerton, California, attacked by a former patient seen walking in moments earlier with a hunting knife. Help me, I've been stabbed! Reporter: That patient, Katherine Brazeau, had been treated by the therapist for three years until they had a falling out. The therapist got a restraining order. Brazeau allegedly making repeated threats. She makes it clear that the therapist is going to die. Reporter: The two veteran officers try to get in, but the door is locked. Fullerton police department. Anybody inside come out with your hands up. Reporter: So they kick it in. As Brazeau raises the knife again, both officers open fire. Brazeau, shot seven times and was killed. The therapist survived. This entire incident from last may was over in just three minutes. The district attorney determined the two officers acted reasonably in order to save a life. Tom? Clayton Sandell with that chilling video. Clayton, thank you.

This transcript has been automatically generated and may not be 100% accurate.

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