(Francisco Kjolseth | The Salt Lake Tribune) Leah Scharp, sister of Marla Scharp, a 26-year-old former BYU student who on June 29, 1978 was raped and murdered in her Provo home during a half-hour window of time in which her roommates were absent, holds up images of her sister in hopes new leads can be found to find her killer. Her case was closed in 1984 by the confession of Henry Lee Lucas, who also confessed to hundreds of other murders in the U.S. Lucas's confessions have since been debunked.