The Lilly Kane Murder Case is an investigation of the death of former Neptune High student Lilly Kane, sister of Duncan and daughter of Jake and Celeste. It is the main focus of Season 1. The murder shocked Neptune greatly and it changed Veronica's life forever.
Sheriff Keith Mars suspects Jake Kane while his successor Don Lamb charges Abel Koontz. However, Veronica Mars discovers that the real murderer is Aaron Echolls.