During lunch time on January 18, 2003, the sisters began giving their mother liquor in order to get her drunk. Their plan was to make Linda fully
inebriated so that she could not resist their attack. They also gave their mother six
Tylenol 3 tablets (containing
codeine) to slow down her heart. The murder was intended to look like an accident. Sandra and Beth filled the family bathtub with water and took their mother to the bathroom. She had difficulty getting into the bathtub, because of the mixture of
vodka and pills she had been given. After putting gloves on, Sandra and Beth gave their mother a massage. Within minutes, according to police reports, Sandra instructed her mother to lie on her stomach so that she could scrub her back. Sandra instantly pushed her mother's head down and did not let go. After four minutes, Sandra released her mother's head and found Andersen to be dead. After having killed their mother, Sandra and Beth went with their friends to a nearby restaurant both to celebrate their victory Dr. Robert Langville, a forensic toxicologist, testified that Andersen had five times the legal blood-alcohol level for driving in her system and three times the safe level of codeine in her blood when she died. The girls lived with an aunt and their three-year-old brother lived with other family members.
Manulife, an insurance company, paid out $133,674.90 to the two girls and $67,000 to their brother. About eleven months after Andersen's death, at a party, one of the girls spoke to a young male friend about the crime. He went to the police and told them that one of the girls had told him that she and her sister had drowned their mother. Following his report a car was provided to the male friend, who was wired for audio and video by the police. He talked with the girls about the details of their mother's murder over the course of one month. ==Arrest and trial==