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Note: Varies by jurisdiction
Note: Varies by jurisdiction
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The phrase lonely hearts killer, sometimes also want-ad killer, or matrimonial bureau murderer, is a journalistic term of art that refers to a person who commits murder by contacting a victim who has either posted advertisements to or answered advertisements via newspaper classified ads and personal or lonely hearts club ads.
Varied motives 
The actual motivations of these criminals are varied. By definition, a killing will have taken place in order for the suspected, accused, or convicted perpetrator to be dubbed a want-ad or lonely hearts club killer. However, the crime may have involved a simple robbery gone wrong, an elaborate insurance fraud scheme, sexual violence, or any of several other ritualized pathological impulses (e.g. necrophilia, mutilation, cannibalism, etc.). Sometimes murder is not the (original) intent, but becomes a by-product of rape or other struggle; in some cases, murder is committed simply to cover up the original crime. Some, on the other hand, are serial killers who utilize this method of targeting victims, either exclusively, or when it suits them.
Notable lonely hearts and want-ad killers 
The following accused and convicted murderers and serial killers are known to have used want ads, personal ads, and/or matrimonial bureaus to contact their victims:
- Harvey Glatman – known as "the lonely hearts killer"
- Raymond Fernandez and Martha Beck – known as "the honeymoon killers" and "the lonely hearts killers" 
- Albert Fish
- Harvey Carignan – known as "the want-ad killer" 
- Belle Gunness
- Robert Hansen
- Henri Désiré Landru
- Bobby Joe Long – known as "the classified ad rapist"
- Harry Powers – known as "the lonely hearts killer", "the matrimonial bureau murderer", "the West Virginia Bluebeard", and "the butcher of Clarksburg"
- Philip Markoff – known as "the Craigslist killer"
Lonely hearts killers in popular culture 
The theme of the want-ad killer or lonely hearts club murderer has been popular in fiction. Examples of dramatic treatments of this theme are listed in chronological order of publication or release:
- Pièges was a 1939 French thriller film directed by Robert Siodmak; starring Maurice Chevalier, Marie Déa, and André Brunot; it tells the story of an amateur female sleuth who goes undercover to trap a serial killer who has murdered one of her friends and who stalks his prey via classified ads.
- "The Want-Ad Murders" by Frances M. Deegan, was a novella that appeared in Detective Story Magazine in March 1944, and was reprinted in Detective Story Annual 1948, edited by Daisy Bacon, and published by Street & Smith in 1948.
- Lured was a 1947 film featuring a serial killer who uses newspaper personal ads to select his victims. Known as Personal Column in its UK release, this United Artists film was directed by Douglas Sirk and starred Lucille Ball, George Sanders, Boris Karloff, Charles Coburn, and Cedric Hardwicke.
- Monsieur Verdoux was a 1947 film written by, directed by, and starring Charlie Chaplin, and based on the life of the French lonely hearts killer Henri Désiré Landru.
- Bluebeard's Ten Honeymoons was a 1960 film that starred George Sanders as Henri Désiré Landru.
- The Honeymoon Killers was a 1970 film fictionalization of the murders committed by Ramond Fernandez and Martha Beck.
- Sea of Love was a 1989 film drama in which a series of male murder victims are discovered to have each submitted ads in rhyme for publication in the lonely hearts column of the same magazine. The police detective on the case convinces his chief to write rhyming ads for the magazine and to investigate any women who reply.
- Deep Crimson, a 1996 Mexican movie directed by Arturo Ripstein, was an adaptation of the story of Ray Fernandez and Martha Beck.
- Method was a film released in 2004, inspired by and loosely based on the Belle Gunness murders.
- Désiré Landru, a 2005 French movie, was an adaptation of the story of Henri Désiré Landru.
- Lonely Hearts was a 2006 dramatized film account of the killings perpetrated by Ray Fernandez and Martha Beck.
See also 
- "Lonely Hearts Murderer'". New York Daily News. April 5, 2009. Retrieved April 22, 2009. "Long before there was a craigslist or dot-com dating, there were places where men and women who were too shy or busy to meet face to face could find romance. Calling themselves "matrimonial bureaus," these organizations were known mostly as the "lonely hearts clubs," and they flourished through the middle of the 20th century. [...] (The article is a side-bar to a story about Philip Markoff, a "Craigslist killer" and it describes the murders committed in 1931 by Harry F. Powers, the so-called "Matromonial Bureau Murderer," also known as "The West Virginia Bluebeard" and "The Butcher of Clarksburg.")"
- 'The A to Z Encyclopedia of Serial Killers' by Harold Schechter;
- http://www.timescall.com/BoulderJaneDoe/index.asp Boulder Jane Doe (This article covers a possible Colorado victim of Harvey Glatman, California’s “Lonely Hearts Killer.”)
- http://www.delawareonline.com/apps/pbcs.dll/article?AID=/20070717/NEWS/70717016/1006&theme=BACKSTORY Backstory extras: The Lonely Hearts Murder Case (This article deals with Raymond Fernandez and Martha Beck of Delaware)
- "The Want Ad Killer" by Ann Rule, 1983 ISBN 0-451-16688-4. (This book is about the serial killer Harvey Carignan.)
- Désiré Landru