More than half a year after Nancy Guthrie disappeared from her Arizona home, the case remains without the answers her family has desperately been waiting for.

Nancy, 84, vanished from the Tucson area on February 1 after last being seen the previous night. Investigators believe she was taken against her will, and the FBI continues to classify the investigation as a kidnapping-for-ransom case.

But no suspect has been publicly identified.

No arrest has been announced.

And Nancy herself has not been found.

Now, as the investigation enters another critical stage, questions are emerging not only about who may have taken Nancy—but also about how the investigation was handled from the beginning.

The latest controversy comes from inside the Pima County Sheriff’s Department. Sergeant Aaron Cross, president of the Pima County Deputies Organization, has publicly criticized the department’s handling of the case. Cross has alleged that investigators with limited homicide experience were placed in key positions and that communication problems, duplication of work and crime-scene concerns hindered the investigation.

Those accusations are serious, but they remain allegations rather than established findings. The sheriff’s department has not publicly accepted Cross’s characterization of the investigation.

Sheriff Chris Nanos has repeatedly maintained that investigators are making progress.

In an interview marking six months since Nancy disappeared, Nanos said investigators had reviewed evidence from the home, DNA, video analysis and thousands of tips. He acknowledged that authorities were not where they wanted to be but said the work was continuing.

The investigation began with a disturbing discovery inside Nancy’s home.

She had left behind essential personal belongings, including items she would normally be expected to have with her. Investigators also found blood near the front porch, later confirmed to be Nancy’s.

The FBI subsequently released surveillance footage showing a masked person near the residence around the time of the disappearance.

That footage remains one of the most recognizable pieces of evidence in the case.

Yet months later, the identity of the person seen in the footage has not been publicly established.

The mystery became even more complicated when a series of ransom-related messages began circulating.

Some communications demanded money. Others made contradictory claims about Nancy’s fate. One widely reported message claimed she had died.

But the FBI later warned that not all of the communications were genuine.

In July, federal investigators confirmed that some ransom notes had been determined to be fraudulent extortion attempts, while other ransom demands were still being assessed. The FBI emphasized that the overall case remained an active kidnapping-for-ransom investigation.

That distinction is crucial.

A fake ransom message can create the appearance of progress while actually sending investigators in the wrong direction.

And that is exactly what has happened repeatedly throughout the Nancy Guthrie investigation.

The case has also attracted volunteers and independent searchers who have conducted searches in Arizona and even near the U.S.-Mexico border after receiving tips.

Some searches have produced discoveries—but not the answer Nancy’s family needs.

In May, human bones were found during a volunteer search near Tucson. Experts concluded that the remains were ancient and unrelated to Nancy.

More recently, another set of human remains was reported in the Tucson desert. This time, the discovery was approximately 15 miles from Nancy’s home. Again, authorities said there was no indication the remains were connected to her disappearance.

The repeated discoveries have understandably fueled speculation online.

But investigators have warned against assuming that every discovery in the region is connected to Nancy.

For her family, the emotional toll continues.

Savannah Guthrie has publicly pleaded for someone with information to come forward. In early August, she described the family as desperate for answers and urged anyone who knows something to speak with authorities.

Meanwhile, federal officials have acknowledged the frustration surrounding the case.

Attorney General Todd Blanche recently described the investigation as heartbreaking and said he shared the frustration felt by the public over the lack of a resolution.

But frustration is not evidence.

And speculation is not proof.

As of August 18, Nancy Guthrie remains missing. The latest human-remains discovery has not changed that fact.

The investigation continues.

The question remains the same:

Who took Nancy Guthrie—and where did they take her?