In a chilling revelation, court documents have disclosed that Tifany Machel Adams, a grandmother embroiled in a child custody dispute, had searched for phrases such as "taser pain level," offering a grim insight into the brutal deaths of two Kansas women.

Adams, 54, along with her boyfriend Tad Bert Cullum, and the married couple Cole and Cora Twombly, are all facing charges of first-degree murder, kidnapping, and conspiracy to commit murder in connection to the deaths of Veronica Butler, a 27-year-old mother, and Jilian Kelley, a 38-year-old preacher's wife and mother.

The quartet, as previously reported by Fox News Digital, were members of a religiously affiliated anti-government group known as "God's Misfits." According to investigators, their motive was to gain custody of Butler's two children. Adams' son, Wrangler Rickman, who was in an Oklahoma rehab facility at the time of the women's disappearance, had custody of the children. Butler was permitted supervised visitation every Saturday and was expected to be granted unsupervised visitation in an upcoming hearing, as per court documents.

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The last sighting of Butler and Kelley was on March 30, as they embarked on a journey from Hugoton, Kansas, for a court-supervised visit with Butler's children in Oklahoma. When the women failed to deliver Butler's daughter to a birthday party as planned, Butler's family initiated a search. They discovered Butler's car at the Kansas-Oklahoma border, with disturbing evidence of a severe injury, including blood on the road and Butler's glasses near a broken hammer.

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A pistol magazine was found in Kelley's purse at the scene, but the pistol itself was missing, according to a probable cause affidavit obtained by Fox News Digital. Interviews with the Twombly's 16-year-old and a review of data from Adams' phone and three burner phones led investigators to the women's bodies on April 14 in a cow pasture leased by Cullum.

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Adams informed police that Butler and Rickman's children were staying with family friends on March 29 and that Butler had canceled her visitation on the morning of March 30. However, Butler's phone records indicated that she was in the process of picking up Kelley for the visit. Kelley was Butler's preferred supervisor for visitations.

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Rickman's grandmother, Debi Knox-Davis, reported to police that the father of the children had told her their family wouldn't have to worry about their custody battle with Butler for much longer. He told her Adams "knew the path the judge walked to work," and that they planned to "take out Veronica at drop off."

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The Oklahoma State Bureau of Investigation (OSBI) obtained a warrant to search Adams' phone on April 1. Searches performed on the device allegedly included "taser pain level," gun shops, prepaid cellular phones, and "how to get someone out of [your] house." A subsequent search of local gun shops revealed that Adams had purchased five stun guns on March 23.

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On April 3, the Twombly couple's daughter reportedly told police that she was informed her parents, Adams, and Cullum were responsible for Butler and Kelley's deaths. Adams had provided the other three with burner phones, she said, so they could communicate discreetly about their plans.

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Before the women were last seen on March 30, the 16-year-old reportedly said she'd overheard conversations between the four suspects about how "Butler [was] not protecting her children from her brother ... in reference to a sexual abuse allegation."

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The 16-year-old said her parents told her they would "not have to worry about [Butler] again" and that the two may have been placed in a well. "[The 16-year-old] asked why [Kelley] had to die and was told by Cora that [Kelley] wasn't innocent either, as she had supported Butler," investigators wrote.

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The group's initial plan was to "throw an anvil through Butler's windshield while driving, making it look like an accident because anvils regularly fall off work vehicles," Cora allegedly told the 16-year-old.

OSBI investigators found records that Adams had purchased the three prepaid cellphones. Tracing the previous locations of the phones led detectives to "fresh dirt work" covered with hay, where the women's bodies were found.

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While the women's bodies and causes of death are pending a medical examiner's report, OSBI stated there is "no chance" Butler and Kelley are still alive. "This case is tragic," OSBI spokesperson Hunter McKee told KFDA. "You have two people who are dead and four people who committed an absolutely brutal crime."