Trigger warning: This article contains information about graphic violence.

No one knew what transpired during the early morning hours after the night of December 3, 2009, when Koster was dropped off at her Medford residence by her boyfriend Dan Mayor, 28, and two other female friends. Her mother, Barbara, stated that she spoke to the Mayor the following day when she couldn’t get a hold of her 24-year-old daughter, who told her that they saw Becky enter the house.

Days later, when a mutilated and burned corpse was found, the missing person’s case took a tragic turn and Becky Koster’s family and friends saw their worst nightmares come to life. Now that Lifetime’s #TextMeWhenYouGetHome is officially releasing an episode dedicated to the gruesome murder of the home health care aide, here are five chilling facts that one must know about the case.

Five chilling facts about Becky Koster’s Long Island murder case

1) Surveillance video showed Becky talking to a mystery man

Surveillance video from the night of December 3, 2009, showed Becky Koster being approached by a man while she was getting drinks at the bar. The mystery man was later identified as Evans Ganthier, 33, who allegedly murdered Koster and mutilated her body to prevent identification. The victim’s best friend, Nicole Longo, who was present at the scene that night, stated that the two were,

2) Ganthier contacted Becky an hour after she left the bar

Reports state that the cell phone data retrieved from Becky’s mobile showed that she received two calls from an unknown number that night, about an hour after she was dropped home by her boyfriend and friends. The number was soon traced back to 33-year-old Ganthier, who denied having anything to do with Becky or the murder.

3) Becky’s mother Barbara received tormenting texts from her daughter’s phone

Around three days after Becky Koster’s disappearance, her mother received a text from her phone, which made them believe that her boyfriend Dan may have had something to do with her disappearance. Speaking about the text, Barbara said that it stated,

The victim’s family and friends who had been anxiously scavenging for her saw a ray of sunshine when they received a text. But they soon discovered that it was nothing more than a sham and an attempt to mislead those investigating the case. The killer wanted to frame Dan for the murder, but authorities knew more than to believe what was written in those texts.

Barbara, after saying that she received another text a few hours later, added:

Although they clung to tiny strands of hope, their world was soon about to come crashing down.

4) Koster’s body had been mutilated and burned beyond recognition

Initially, authorities did not know that the charred body found in a field in North Stonington, Connecticut, was that of Becky Koster, the 24-year-old missing woman they had been searching for. Police claimed that the victim’s hair, toes, fingertips, and face had been completely cut off to a point where it was almost impossible to identify the person. However, dental records proved to be quite helpful in the case.

Moreover, Ganthier confessed that he had to cut off certain parts of her body to prevent identification. He said that he panicked and thought it was the only way to get out of the messy situation. The man said Becky tripped and fell on some dumbbells and died in his house garage.

5) Becky Koster was stabbed to death by Evans Ganthier

Authorities refused to believe Ganthier’s confession. They had every reason to believe that the 33-year-old had allegedly stabbed Becky Koster to death in his car, as per the evidence and forensic reports. Newsweek reporter Andrew Smith stated:

He was found guilty of second-degree murder in 2013 and was sent to prison for a maximum sentence of 25 years.

Watch #TextMeWhenYouGetHome on Lifetime to revisit the gruesome murder of Becky Koster in its Season 1 episode 8, set to air on Monday, August 1, 2022, at 9 pm ET.

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