Arianna Jones vanished after meeting a man for a movie, leaving relatives to retrace a night police now describe as premeditated.
GLENDALE, Ariz. — Two days after Arianna Bailey Jones left home for a movie date, her family knew something was wrong. The 21-year-old mother had stopped answering messages and had not resumed contact with her young son. A relative went to her apartment, and on July 7 the family reported her missing, beginning a search that would end four days later in a remote desert area near Lake Pleasant.
The missing-person case is now a first-degree murder prosecution against Domonic Rodolico, 24, the man police say Jones had met through social media and saw in person for the first time on July 5. Rodolico also was accused after his arrest of abandonment or concealment of a dead body. A grand jury has indicted him on murder charges, and he has pleaded not guilty. A trial is scheduled for March. Police have not publicly established a motive, and the latest reporting says Jones’ exact cause of death also remains undetermined.
Before detectives knew where Jones had gone, her family was measuring her disappearance against the routines of her life. Her mother, Sophia Sardinas, was caring for Jones’ 2-year-old son when Jones vanished. Sardinas later told ABC15 that Jones’ attachment to the boy made the lack of contact immediately unusual. Jones had plans for her future, family members said, including hopes of working as a stylist and building a stable life around her son. For relatives, those ordinary expectations were the first evidence that her silence was not voluntary.
Police found more reasons for concern when they checked Jones’ apartment. Local reports said her dog had been left in a kennel without food or water. A friend told detectives that Jones had planned to go to a movie with an acquaintance on July 5. Investigators then turned to the records surrounding that plan. They reviewed communications, surveillance video, cellphone information and vehicle-tracking data. The combined trail identified Rodolico as the person who had picked Jones up and accompanied her to a Harkins theater.
The movie itself appeared routine on surveillance footage. Jones and Rodolico entered the theater and later left after the showing. Investigators said they bought drinks and snacks, and images from the theater showed souvenir-style cups associated with the outing. The importance of those cups was not apparent until days later. By then, detectives had followed the pair’s movements beyond the theater and into a sparsely developed area north of Glendale, where the two phones were recorded together late that night.
According to an arrest affidavit, the devices stayed in the remote area for about 45 to 50 minutes. Jones’ phone then disconnected from the network. Investigators said a disconnection could happen if a phone were powered off, switched to airplane mode or otherwise taken offline. Roughly 10 minutes later, records showed Rodolico leaving the area. That sequence gave police a geographic focus for their search after Jones was reported missing, but investigators also found that Rodolico’s connection to the location appeared to have started before the date.
Police said location information placed Rodolico in the same desert area earlier on July 5. Investigators described more than one visit before he picked up Jones and said materials later recovered there supported their theory that the site had been prepared in advance. Concrete mix and other supplies were among the items cited in the affidavit. Investigators interpreted the repeated trips and the equipment as evidence of planning. The allegation of premeditation is central to the first-degree murder case, but it remains an allegation prosecutors must prove in court.
While one team retraced the travel records, detectives also watched Rodolico. The affidavit said officers observed him cleaning his Nissan Sentra, including the rear passenger area and trunk. Police described seeing him vacuum and wipe portions of the vehicle. Authorities eventually questioned him about the night Jones disappeared. Rodolico acknowledged going to the movies with a woman but initially blamed her death on two unknown men, according to investigators. Police said he later acknowledged that story was false and offered another explanation involving an unidentified man who supposedly told him to bring Jones to the desert.
Rodolico did not admit killing Jones, according to the affidavit. Investigators said he was unable to give a meaningful explanation of how the unidentified person in his later account had contacted him. Police also considered his admission that he had gone to the desert location before picking Jones up to be inconsistent with the idea that he had unknowingly delivered her there. Rodolico has denied the murder accusation in court through his not-guilty plea, and the defense has not yet presented its full trial response to the evidence described publicly by police.
On July 11, the search shifted from locating a missing woman to processing a death scene. Cadaver dogs helped investigators locate a shallow grave in the remote area near Lake Pleasant. Police said the remains and clothing matched Jones closely enough for authorities to identify her. The scene contained objects that investigators believed connected the burial site with the earlier date, most notably Harkins souvenir cups similar to those visible on surveillance footage. Authorities also reported finding latex gloves, concrete-related materials, water bottles, a hair accessory and other items.
For Jones’ family, the discovery ended several days of searching but opened a different kind of uncertainty. Sardinas had distributed flyers and hoped her daughter would be found alive. After police announced the death, she spoke publicly about Jones as a mother rather than simply as the victim in a criminal case. Other relatives and friends have done the same. At an August vigil, those close to Jones again emphasized her bond with her son and the future she expected to have. The gathering came as the prosecution was moving from the arrest stage toward a scheduled trial.
The criminal case also brought scrutiny to Rodolico’s earlier record. Local outlets reported that he was on probation for a prior criminal impersonation conviction involving thefts from QuikTrip stores. He had received two years of probation. Police officials noted that the earlier offense was far different from the homicide allegation. The conviction may be part of Rodolico’s personal legal history, but it does not establish that he committed the later crimes involving Jones, and prosecutors still carry the burden of proving the new charges.
More than a month after Jones’ body was found, some of the most basic questions remain unsettled publicly. Authorities have not announced why they believe she was targeted, and the exact cause of death has not been released in the latest reporting. What has changed is the legal posture: Rodolico has been indicted, entered a not-guilty plea and is expected to face trial in March. Jones’ family, meanwhile, has moved from asking where she was to waiting for a court to examine what happened during the hours after she left for a movie on July 5.
Author note: Last updated August 21, 2026.