High Quality Content by WIKIPEDIA articles! Raymond Fernandez (December 17, 1914 – March 8, 1951) and Martha Beck (May 6, 1920 – March 8, 1951) became known as "The Lonely Hearts Killers" after their arrest and trial for serial murder in 1949. Between 1947 and 1949 they are believed to have killed as many as twenty women. The 1970 movie The Honeymoon Killers, the 1996 movie Deep Crimson, the 2006 movie Lonely Hearts, and an episode of the TV series Cold Case were all based on this case.