he wanted me to -- painting a picture of a rejected man. he seemed tormented by the possibility to lose his children in the divorce. >> the hardest part of saying goodbye to my girls. not tucking the man. this will be devastating. it's almost incapacitating. >> the diaries were important. they gave us insight into the defendant's mind, particularly how he was really attached to his daughters. more so than the average parent would say. >> but there was more in the diaries. he confessed that there had been violence in the breakup. the last incident only weeks before kit was killed. >> goodbye katie. katie had of fight this evening. he's she struck me. i lost my temper and struck back. >> then there was the police interview. in which reacting to a police fly, gregory admitted that he was in the house with kit alone. it shows the pasta q shun