John Allen Gaither’s relatives doubted communications sent in his name, helping steer police back toward the Gulfport home he shared with his mother.
GULFPORT, Miss. — Long before a Mississippi mother admitted killing her adult son, his relatives were already questioning an unusual stream of letters, texts and a phone call that seemed designed to prove a missing man was alive when police say he was concealed inside his own home.
Those doubts became a defining thread in the investigation of John Allen Gaither’s death. Jerri Roby, 69, pleaded guilty July 22 to first-degree murder and was sentenced to life in prison for killing Gaither, 42, at the Gulfport home where they lived. Prosecutors said Roby did more than hide his body: She created communications in his name and arranged other activity intended to persuade relatives that Gaither had left Mississippi. The deception ultimately failed as family members compared the messages with what they knew about Gaither and repeatedly returned to police with their concerns.
Gaither’s relatives had reason to notice when his regular communications stopped. According to testimony reported after the case began, family members said he usually stayed in touch nearly every day. That pattern ended after Dec. 10, 2023. By late December, relatives were asking Roby and law enforcement where he had gone. The first answers suggested nothing criminal had happened. Roby said her son had left for Louisiana in connection with a vehicle. As days passed without direct contact, however, family members became less willing to accept explanations that did not match Gaither’s normal behavior.
The supposed proof of Gaither’s continued travels became increasingly elaborate. His stepmother received a letter that appeared to be from him and said he had gone to the Philippines to meet a woman. Relatives also received messages from his phone and, later, a phone call. Police said Roby told different stories at different times, including versions involving Louisiana, Mexico and travel connected to a woman. The accounts shifted as investigators tested them against records. Rather than closing the missing-person inquiry, each new claim gave police another fact that could be checked independently.
Digital evidence undercut at least one early explanation. Roby told police Gaither had used an Uber to travel to Louisiana, but investigators found no recent ride-sharing activity matching that claim. His car was still at the Gulfport house. Police also followed up at a storage facility where Gaither worked on vehicles and reconstructed his known movements before he disappeared. Local court reporting later described surveillance footage, transaction records and other time-stamped evidence that helped investigators narrow the period in which Gaither was last known to be alive.
The missing-person case began formally in late December, but the investigation intensified in early January when Gaither’s brother and stepmother again contacted authorities. They said they had received communications presented as coming from him but did not believe he was the sender. Their skepticism was significant because the apparent messages could otherwise have suggested Gaither had voluntarily left. Investigators instead began examining how the communications had been produced, where Gaither’s phone had been used and whether his absence could be reconciled with the travel stories coming from Roby.
While detectives tested those communications, evidence at the house pointed in another direction. During an initial visit, police came across a receipt from a Gulfport Home Depot. It listed 15 bags of sand, patch-and-seal tape, straw and a dumpster bag purchased shortly before the missing-person report. Investigators later identified another trip in which plastic sheeting, soil and tape were purchased. The items alone did not explain what had happened to Gaither, but their timing took on greater significance when authorities compared them with changes made inside Roby’s residence.
On Jan. 18, 2024, Gulfport police executed a search warrant at the home. They found a makeshift wall in the front portion of the house. Behind it was a large wooden box containing Gaither’s body. Materials around the box were consistent with types of products investigators had traced through the store purchases. An autopsy determined that Gaither died from a gunshot wound to the back of the head. The discovery ended the missing-person phase of the case and established that the communications received by relatives had not reflected Gaither’s actual whereabouts.
Investigators later said Roby admitted responsibility for much of the impersonation. After she received medical treatment and was interviewed by police, prosecutors said she acknowledged forging letters sent to relatives, writing texts while pretending to be Gaither and persuading her boyfriend to call family members while posing as him. She also admitted taking Gaither’s phone to Florida, according to prosecutors, so activity from the device would register on cellular towers there. The steps created multiple forms of apparent evidence suggesting that Gaither was away from Mississippi rather than concealed in the Gulfport house.
Roby did not initially admit the homicide in the same terms she later used in court. During the investigation, she claimed Gaither had shot himself and that she then concealed his body. At her July 2026 plea hearing, she acknowledged that she shot him. She characterized the decision as spontaneous and said it was connected to what she described as Gaither’s depression. Circuit Court Judge Randi P. Mueller questioned that account, citing the purchases and preparations that preceded the disappearance as well as the false information Roby provided after relatives began looking for her son.
The legal case continued for more than two years after Gaither’s body was discovered. At a preliminary hearing in February 2024, a Gulfport detective described the evidence developed during the missing-person inquiry. A judge ruled there was enough evidence for the murder case to advance and kept Roby in custody without bond. In May 2025, a Harrison County grand jury indicted her on first-degree murder and possession of a firearm by a felon. The indictment moved the case toward a potential trial before Roby ultimately chose to plead guilty to first-degree murder in July 2026.
Investigators also considered Roby’s past when assessing her during the case. Authorities learned that she had served prison time in Florida for a 1993 killing. Local reporting said prosecutors highlighted her previous flight after posting bail in that older case when opposing her release in Mississippi. Detectives also testified about withdrawals from Gaither’s bank accounts after his disappearance, even though Roby had authority to access the accounts. Those facts did not replace the evidence concerning Gaither’s death, but they became pieces of the broader chronology authorities presented in court.
At sentencing, the focus returned to the long trail of misleading information that began after Gaither stopped contacting his family. District Attorney Crosby Parker said investigators continued pursuing the case despite extensive attempts to distance Roby from the killing. Mueller imposed a life sentence after accepting the guilty plea. The outcome meant prosecutors would not need to present the full evidence to a trial jury, but Roby’s courtroom admission established criminal responsibility for the killing that relatives had first encountered as an unexplained silence.
Roby remains sentenced to life in the custody of the Mississippi Department of Corrections. For Gaither’s family, the case ultimately turned on something simpler than the elaborate stories surrounding his disappearance: They knew the messages did not sound like convincing proof that a man who normally stayed in contact had simply gone away, and they continued asking police to find out what had happened to him.
Author note: Last updated Aug. 26, 2026.