Hailey Dunn's Mom Says She, Boyfriend Failed Polygraphs

Among the guests were Billie and Clint Dunn, separated parents of Hailey Dunn, and KTAB's Priscilla Luong.

According to Billie Dunn, she was questioned for 10-12 hours on Wednesday night after admittedly failing a polygraph test. Dunn explained the details of the polygraph testing on Thursday night's "Nancy Grace" broadcast.

Dunn also said that her boyfriend, Shawn Adkins, also failed his polygraph test. Since then, Adkins has left Colorado City and is now staying with his grandmother in West Texas. Dunn said she asked Adkins not to come back.

KTAB's Priscilla Luong was told earlier in the day by her sources that Dunn and Adkins failed their polygraphs.

Dunn said investigators asked her if she had caused Hailey's disappearance, and if she was afraid of answering their questions.

Hailey's father, Clint Dunn, has not taken a polygraph yet, and is not scheduled to take one at this time. He says he has volunteered to take a test.

The last portion of the interview centered around Billie Dunn's current boyfriend.

Billie told Nancy Grace she dated Shawn Adkins for two and a half years before they decided to move in together. They were living together for four months before Hailey disappeared.

According to Billie, she met Adkins on Myspace and met him in person about a month later. Hailey was not present when they first met.

Dunn told Nancy Grace that Hailey and Shawn did not get along when they first met, but that their relationship had been improving. Hailey's grandmother, Connie Jones, told KCBD this week that Hailey and Shawn did not have a good relationship.

According to Nancy Grace producers, the show may feature this case again on Monday evening.

Continuing coverage:

• Find Hailey Dunn