December 27, 2010, was the last time anyone saw Hailey Dunn.
Law enforcement first classified the 13-year-old as a runaway, but the case quickly turned into a criminal investigation.
On January 5th, Hailey's mother, Billie, and her mother's boyfriend, Shawn Adkins, failed polygraph tests relating to Hailey's whereabouts.
It was later reported that Adkins told investigators Hailey told him she was going to her father's house and later to a friend's for a sleep over. Neither the father nor the friend saw or heard from Hailey.
Many began to raise questions about Adkins, after he told one story about that December day, but the records suggested another story, all together.
HLN's "The Nancy Grace Show" featured the story for several weeks following her disappearance, bringing the story nationwide.
On January 14th, law enforcement officially named Adkins a suspect in the case, and remains the only named suspect.
Since Hailey was first reported missing, search groups have combed through areas of Mitchell, Scurry, and Howard Counties for months, looking for any sign of of the missing girl. Whether by horse, vehicle, foot, or through the air, nothing has been found yet.
In the course of looking for the teen, other family secrets have been revealed.
Affidavits released late last month show investigators found child pornography on electronics seized from Adkins' grandmother's home in Dunn.
On March 17th, Billie spent the night in jail after lying to police about having Adkins in her home.
Dunn said later the next day she filed a "no-trespassing order" against Adkins, but she was reportedly seen with him that same weekend.
Now three months in, investigators are left with the same question they started with, "Where is 13-year-old Hailey Dunn?"
An answer that many hope will come soon.