She is a single woman who was raped and killed by her car dealer whose name is Roger Hicks.
Lynn went to Roger in hopes of buying a new car. When Roger met with her, he ran a background check on her and found everything that he needed to know in preparation to kill her. Roger found her house, talked his way inside, and then raped and killed her. Dexter was later called to the scene of the crime and saw her naked body on the bloody floor. He decided to investigate the murder on his own and discovered that Roger had killed her.