Grace College - What is Behavioral Science? Find out from our very own Dr. Tom Edgington: https://go.grace.edu/Behavioral-Science | Facebook
![My sister the psychotic killer: Tom's sister knifed their mother to death and six years later butchered a stranger. now he reveals: I was on her death list, too | Daily Mail My sister the psychotic killer: Tom's sister knifed their mother to death and six years later butchered a stranger. now he reveals: I was on her death list, too | Daily Mail](https://i.dailymail.co.uk/i/pix/2013/03/16/article-2294221-18B3A701000005DC-20_1024x615_large.jpg)
My sister the psychotic killer: Tom's sister knifed their mother to death and six years later butchered a stranger. now he reveals: I was on her death list, too | Daily Mail
![My sister the psychotic killer: Tom's sister knifed their mother to death and six years later butchered a stranger. now he reveals: I was on her death list, too | Daily Mail My sister the psychotic killer: Tom's sister knifed their mother to death and six years later butchered a stranger. now he reveals: I was on her death list, too | Daily Mail](https://i.dailymail.co.uk/i/pix/2013/03/16/article-0-18B2E643000005DC-223_634x445.jpg)
My sister the psychotic killer: Tom's sister knifed their mother to death and six years later butchered a stranger. now he reveals: I was on her death list, too | Daily Mail
![My sister the psychotic killer: Tom's sister knifed their mother to death and six years later butchered a stranger. now he reveals: I was on her death list, too | Daily Mail My sister the psychotic killer: Tom's sister knifed their mother to death and six years later butchered a stranger. now he reveals: I was on her death list, too | Daily Mail](https://i.dailymail.co.uk/i/pix/2013/03/16/article-0-18B2E64A000005DC-711_306x461.jpg)