COLORADO CITY, TX (KCBD) - Saturday marks four years since 13-year-old Hailey Dunn from Colorado City went missing.
On April 4, 2013, Hailey's body was discovered near J.B. Thomas Lake, 30 miles from her home.
Now, four years later, no one has been charged in her homicide.
It was Hailey's mother's boyfriend at the time, Shawn Adkins, who was the last to see Hailey.
He told police that Hailey was going to a friend's house On December 27, 2010, but she never arrived.
A few weeks later, on Jan. 4, the Texas rangers and the FBI got involved and said the friend Hailey was supposedly going to visit said she was never expecting her.
Days later, Billie Jean Dunn, Hailey's mother, admitted she and Adkins failed lie detector tests concerning Hailey's whereabouts and Adkins was later named as a person of interest.
Meanwhile, authorities searched landfills, fields and wooded areas hoping to find Hailey.
More than two years had passed with no sign of the 13-year-old girl...until April of 2013, when her remains were discovered at the JB Lake in Scurry County.
According to affidavits in the case, Adkins had previously threatened Billie and Hailey's life.
Documents about serial killers were also found in Billie's home where Adkins lived.
Billie was arrested in March of 2011 for lying to police about where Adkins was.
Then in June, she was given a year of probation and she and Adkins moved to Austin.
Search efforts for Hailey then began to dwindle as time went on.
When we last spoke to Billie, she told us that she was no longer seeing Adkins.
Four years after Hailey's disappearance, her homicide remains a mystery.