Question: Robert John Bardo was convicted for the murder of which American model and actress?
Context: Estelle Lefébure (] ; born 11 May 1966) is a French actress and model.  She was one of the top fashion models in the 1980s and 1990s.  Estelle Lefebure, as she was known in the early 1980s, was discovered by George Gallier and managed by him exclusively at Prestige Models in Paris, France.  George Gallier then moved to New York City to start American Model Management, and managed her career until 1991.  Her national recognition was immediate after the first Guess (clothing) campaign shot by Wayne Mazer in the early 1980s; she then shot several covers of American Vogue (magazine) with photographer Richard Avedon, several covers of American Elle (magazine) with Marc Hispard, Gilles Ben Simon and Bill King.  French "Elle" magazine model editor Odile Saron was also instrumental in helping Estelle's career take off.  In 1991, she switched agencies, moving from American Model Management to Elite, moved to California, and married singer David Hallyday.  During her marriage with David Hallyday, she was known professionally as Estelle Hallyday. Robert John Bardo (born January 2, 1970) is an American man serving life imprisonment without parole after being convicted in October 1991 for the murder of American actress Rebecca Schaeffer on July 18, 1989, whom he had stalked for three years beforehand. Lyndsey Scott (born 1984) is an American model, iOS mobile app software developer, and actress.  She was the first African American model to sign an exclusive runway contract with Calvin Klein.  Between modeling assignments for prestigious fashion houses like Gucci, Prada, and Victoria's Secret, she writes mobile apps for iPhones and iPads.  She has been credited for challenging the stereotypes about models and computer programmers, and for inspiring young women to code. Robert John (born Robert John Pedrick, Jr.  January 3, 1946) is an American singer-songwriter perhaps best known for his 1979 hit single, "Sad Eyes", which reached No. 1 on the US "Billboard" Hot 100. Bardo Pond are an American psychedelic rock band formed in 1991, and who are currently signed to London-based label Fire Records.  The current members are Michael Gibbons (guitar), John Gibbons (guitar), Isobel Sollenberger (flute and vocals), Clint Takeda (bass guitar) and Jason Kourkounis (drums).  Bardo Pond's music is often classified as space rock, acid rock, post-rock, shoegazing, noise or psychedelic rock.  Some Bardo Pond album titles have been derived from the names of esoteric psychedelic substances.  Their sound has been likened to Pink Floyd, Spacemen 3 and My Bloody Valentine amongst others. Robert John Peernock (born c. 1937), from the Los Angeles district of Tarzana, is an American convicted for the murder of his wife, Claire Laurence Peernock, and for the attempted murder of his daughter, Natasha Peernock, on July 22, 1987.  Peernock was a former pyrotechnics engineer and California state employee with the Department of Water Resources who claimed he was framed because he was about to publish a book exposing state corruption. Rebecca Lucile Schaeffer (November 6, 1967 – July 18, 1989) was an American model and actress. The Standard Predictor (SP) is a set of measures of risk for abuse and violence developed in 2010 by Robert John Zagar and William M. Grove on a sample of 1,127 youth and 1,595 adults.  These tests were validated on a sample of 236 teens and adults with 120 different occupations by Robert John Zagar in 2013.  The Standard Predictor (SP) is a self-report set of true and false and multiple choice questions that can be administered to either teens or adults.  The Standard Predictor (SP) correlates well with the Wechsler Intelligence Scale, the Vineland Social Maturity Scale, the Bender Visual Motor Gestalt Test, the Gates-MacGinitie Comprehension, Speed and Accuracy, and Vocabulary Tests and the Stanford Achievement Test.  The Standard Predictor (SP) raw scores translate into a percentile of risk for abuse and violence for either an adolescent or an adult. "Exit" is a song by rock band U2.  It is the tenth track on their 1987 album "The Joshua Tree".  "Exit" was developed from a lengthy jam that was recorded in a single take and edited down to a shorter arrangement.  The lyrics, which portray the mind of a serial killer, were inspired by lead singer Bono's reading of Norman Mailer's 1980 novel "The Executioner's Song", and other related works.  In his trial for the murder of Rebecca Schaeffer, Robert John Bardo used "Exit" as part of his defence, claiming the song had influenced his actions. John William Bardo, Ph.D., is an American educator and the current president of Wichita State University.  Previously, Bardo served as a faculty member at Western Carolina University after serving as the 10th Chancellor for 16 years.
Answer: Rebecca Lucile Schaeffer