Faith Hedgepeth was found dead in her apartment on Sept. 7, 2012.
DNA evidence and exhaustive police work led to an arrest in the 2012 killing of UNC student Faith Hedgepeth.
Here is a timeline of what police say they believe happened the night Faith Hedgepeth was murdered.
Though several people have been interviewed about her death, no arrests have been made.
On Sept. 7, 2012, Faith's roommate, Karena Rosario, and a friend discovered her dead. Six years later Faith's killer is still unknown.
Chapel Hill police say they have received hundreds of tips after granting ABC's 20/20 exclusive and unprecedented access into their investigation of murdered University of North Carolina sophomore Faith Hedgepeth.