Felix Vail: Convicted Murderer and Suspected Serial Killer
Introduction
William Felix Vail, commonly known as Felix Vail, is an American convicted murderer who has long been suspected of killing three women with whom he had intimate relationships. His case spans more than two decades, beginning with the death of his first wife, Mary Horton Vail, in Louisiana in 1962. His longtime companion, Sharon Hensley, disappeared in 1973, and his later wife, Annette Michelle Craver Vail, vanished in 1984. Vail was the last known person to be with all three women.
Only Mary Vail’s death has resulted in a murder conviction. Sharon and Annette remain missing, their bodies have never been recovered, and no legally confirmed dates of death have been established for them. Nevertheless, prosecutors presented their disappearances during Vail’s murder trial as evidence of a disturbing pattern involving young women who vanished after becoming involved with him.
Victims and Missing Women
- Mary Elizabeth Horton Vail: Age 22. Murdered on October 28, 1962, in the Calcasieu River near Lake Charles, Louisiana. Her body was recovered from the river on October 30, 1962. Felix Vail was convicted of her murder on August 12, 2016.
- Sharon Hensley: Age 24. Last known to have communicated with her family in February 1973 while associated with Vail in Louisiana and Florida. She disappeared during 1973, but the precise date and location of her disappearance are uncertain. Her remains have never been found, and she has no verified date of death.
- Annette Michelle Craver Vail: Age 18. Officially listed as missing from Tulsa, Oklahoma, on October 22, 1984. Her family had last seen her earlier that month in Sulphur, Louisiana. Her remains have never been found, and she has no verified date of death.
The Murder of Mary Horton Vail
Mary Horton was a former Eunice High School homecoming queen and a student at McNeese State University. She married Felix Vail in 1961, when she was still a teenager. The couple had a young son, and Mary was reportedly pregnant again when she died. People close to her later described a troubled marriage in which Vail exercised control over his young wife.
On the night of October 28, 1962, Vail took Mary onto the Calcasieu River in a small boat. He later claimed that they were checking trotlines when Mary accidentally fell overboard. According to his account, she became entangled in fishing equipment and drowned before he could rescue her. Vail returned to shore and reported the incident to authorities.
Investigators were suspicious almost immediately. Vail gave differing descriptions of the accident, and physical evidence did not appear to support portions of his story. Investigators questioned how Mary could have become trapped in the manner he described and why Vail had been unable to save her. The nighttime boat trip, the couple’s marital problems and inconsistencies in his statements caused officers to consider the possibility that the drowning had been staged.
Mary’s body was recovered on October 30, 1962. The original autopsy documented drowning but also noted bruising and other injuries. The medical findings were not sufficient at the time to establish homicide beyond doubt. Vail was arrested and initially accused of murder, but the case was presented to a grand jury that declined to indict him. He was released, and Mary’s death remained officially unresolved for decades.
The Disappearance of Sharon Hensley
Approximately a decade after Mary’s death, Vail became involved with Sharon Hensley, a young woman originally from North Dakota. Sharon lived and traveled with him during the early 1970s. Their relationship was described as unstable, and witnesses later recalled arguments and controlling behavior.
Sharon last had known contact with her family in February 1973. She was believed to have been traveling with Vail between Sulphur, Louisiana, and Key West, Florida. Vail offered changing explanations for what had happened to her. He claimed at various times that Sharon had left him, joined other travelers or sailed away with a couple whose identities were never verified.
There was no confirmed sighting of Sharon after her disappearance. She did not resume contact with her relatives, and no reliable evidence established that she had voluntarily begun a new life. Her personal records also showed no clear activity proving that she remained alive. Vail was the last known person closely associated with her, but he was never charged in connection with her disappearance.
The Disappearance of Annette Craver Vail
Annette Michelle Craver met Vail when she was approximately 15 years old and he was in his early forties. Their age difference alarmed Annette’s mother, Mary Rose, who strongly opposed the relationship. Annette nevertheless remained with Vail and later married him while still a teenager.
Accounts from Annette’s family described the marriage as volatile. Annette reportedly told her mother that she wanted to leave Vail, but she later returned to him. Her relatives last saw her in Sulphur, Louisiana, on October 5, 1984. She was officially reported missing from Tulsa, Oklahoma, on October 22, after she failed to maintain contact with her family.
Vail claimed that Annette had left voluntarily. He told different people that she had traveled to Colorado, Mexico or another foreign destination. None of these stories could be confirmed. Annette left behind a family with whom she had been close, and investigators found no credible evidence that she had established a life elsewhere.
Annette’s mother became convinced that Vail had harmed her daughter. She spent years searching for information, contacting law enforcement agencies and examining Vail’s history. Her efforts eventually drew renewed attention not only to Annette’s disappearance but also to Sharon Hensley’s case and Mary Vail’s suspicious drowning.
A Repeated Pattern
The three cases shared striking similarities. Each woman was young when she became involved with Vail. Each relationship was described as troubled or controlling. Mary died while alone with him, while Sharon and Annette disappeared after last being associated with him. Vail also provided accounts that investigators considered inconsistent, unverifiable or implausible.
Mary’s death was initially characterized as a boating accident. Sharon was supposedly traveling with unidentified people. Annette was said to have left for one of several distant destinations. In the latter two cases, no confirmed witnesses, travel records or communications supported Vail’s explanations.
The long intervals between the cases made the suspected pattern difficult to investigate. The events occurred in different jurisdictions, records were scattered, witnesses had died or become difficult to locate, and physical evidence had deteriorated or disappeared. For years, no single agency possessed enough information to connect all three women conclusively.
The Investigation Is Reopened
Journalists and investigators eventually began reexamining Vail’s past. Renewed reporting assembled records concerning Mary, Sharon and Annette and highlighted the fact that Vail was the final known link among all three. Annette’s mother continued to provide information and press authorities to take another look at the cases.
Louisiana investigators reopened Mary’s death and reviewed the original reports, photographs, witness statements and autopsy findings. Modern forensic experts evaluated the injuries recorded on Mary’s body and considered whether they were consistent with Vail’s version of an accidental fall from a boat.
Prosecutors concluded that Mary had been attacked and deliberately drowned. They argued that Vail had taken her onto the river at night, incapacitated her and placed her in the water before presenting himself as the survivor of a tragic accident. The disappearances of Sharon and Annette were used to demonstrate a pattern of women vanishing after troubled relationships with Vail.
The 2016 Murder Trial
More than 50 years after Mary’s death, Vail was arrested and prosecuted for second-degree murder in Calcasieu Parish, Louisiana. The extraordinary age of the case made it one of the oldest suspected serial-murder prosecutions in United States history.
At trial, prosecutors emphasized the contradictions in Vail’s original statements and the physical findings documented in 1962. Expert witnesses testified about bruises and other injuries that suggested Mary had suffered trauma before entering the water. The prosecution maintained that the drowning account had never adequately explained the evidence.
Jurors also heard extensive information about Sharon Hensley and Annette Craver Vail. Although Vail was not on trial for their suspected deaths, their disappearances helped the prosecution show that Mary’s death was not an isolated tragedy. The state argued that Vail repeatedly became involved with young women who then died or vanished while under his influence.
Vail continued to deny murdering Mary. His defense maintained that she had drowned accidentally and argued that the prosecution was attempting to transform suspicion into proof after the passage of more than half a century. The defense also stressed that Vail had never been convicted of harming Sharon or Annette.
On August 12, 2016, the jury unanimously found Felix Vail guilty of second-degree murder in Mary Horton Vail’s death. On September 26, 2016, he received the mandatory sentence of life imprisonment.
Legal Status of the Three Cases
Felix Vail is legally responsible for the murder of Mary Horton Vail. Her verified date of death is October 28, 1962, although her body was not recovered until two days later.
Sharon Hensley and Annette Craver Vail remain officially missing. It is widely suspected that they died as victims of foul play, and investigators have treated Vail as the principal person of interest in both cases. However, neither woman’s remains have been identified, no date of death has been legally established, and Vail has not been convicted of murdering either of them.
For this reason, Vail is often described as a suspected serial killer rather than a legally confirmed serial killer. His conviction proves one murder, while the two additional suspected victims remain unresolved missing-person cases.
Legacy of the Case
The Felix Vail investigation demonstrates how an apparent accidental death can remain unresolved for generations. It also illustrates the obstacles faced by families when suspected crimes cross state lines and occur many years apart. The persistence of Mary’s relatives, Annette’s mother, investigators and journalists ultimately led authorities to reconstruct a case that had once appeared impossible to prosecute.
Mary Horton Vail finally received legal recognition as a murder victim more than 53 years after her death. The disappearances of Sharon Hensley and Annette Craver Vail remain open wounds for their families. Until their remains are recovered or definitive evidence establishes what happened, the full extent of Felix Vail’s crimes will remain unknown.
