. >> reporter: the next night the group commits another murder, this time killing leno and rosemarie la biancaas a n in. were tate, la bianca murders. he slapped it and said, i did this, charlie told me to. what i remember most is they were almost proud what was they had done for chli devastating t people that i had loved could do this. that this -- it's not just talk. >> police believe the hippie clan is responsible for a total of 11 ritualistic murders. >> reporter: several members of the manson family are arrested, including susan atkins. >> susan started telling her cellmate about charlie and her participation in these murders and why and all of that. and by december, the case was breaking open and they took all of us to testify before the grand jury. i'm a 16-year-old being interrogated, threatened with the gas chamber, and they committed me to 90 days at patton state hospital. the 90 days turned into nine months. it was a blessing. all the nurses became my moms. i got psychological counseling. i went to church. then my arresting officer took me in as his foster child. i had like a normal