Kyron Horman mysteriously vanished from his Oregon elementary school six years ago after his school science fair. There have been hundreds of searches, but there has been no trace of the now 13-year-old. His parents, Kaine and Deisree, claim that Kyron's stepmother, Terri, reportedly the last person to see the boy alive, knows what happened to him – but Terri is adamant that she had nothing to do with his disappearance and insists she loved the boy like her own child.
See photos of Kyron before his disappearance and the ongoing investigation:
Kyron Horman boy who vanished in 2010
Kyron Horman boy who vanished in 2010
Kyron Horman prior to his disappearance on June 4th, 2010.
A photo of Kaine Horman, middle, with his son, Kyron, left, and daughter, Kiara, is visible at "Kyron's Wall of Hope" on the fence outside Skyline Elementary School in Portland, Ore., Thursday, July 15, 2010. Kyron, 7, disappeared from the school June 4 after a science fair and is still missing. Officials continue to investigate the case.(AP Photo/Don Ryan)
File--In this Jan. 28, 2013, file photo, Kaine Horman stands in front of an age-progressed photo posted on the side of a truck trailer of what his missing son, Kyron, could look like now during an unveiling for media, Monday, Jan. 28, 2013, at a trucking yard in Pacific, Wash. Kyron Horman, then 7, disappeared in June 2010 from a Portland, Ore., school. The discovery of three abducted women in Ohio gives hope to Horman in finding his son.(AP Photo/Elaine Thompson)
ABC NEWS - The former stepmother of Kyron Horman is sharing her story for the first time since the boy disappeared in Portland, OR, more than 5 years ago. Juju Chang talks with Terri Horman for a PEOPLE/ABC News exclusive interview which will air on JAN. 22 on GOOD MORNING AMERICA (7-9am, ET) and JAN. 23 on NIGHTLINE (12:35am, ET) as well as all ABC News platforms. (Photo by Heidi Gutman/ABC via Getty Images) JUJU CHANG, TERRI HORMAN
ABC NEWS - The former stepmother of Kyron Horman is sharing her story for the first time since the boy disappeared in Portland, OR, more than 5 years ago. Juju Chang talks with Terri Horman for a PEOPLE/ABC News exclusive interview which will air on JAN. 22 on GOOD MORNING AMERICA (7-9am, ET) and JAN. 23 on NIGHTLINE (12:35am, ET) as well as all ABC News platforms. (Photo by Heidi Gutman/ABC via Getty Images) TERRI HORMAN, JUJU CHANG
Kaine Horman, the father of the missing Oregon boy Kyron Horman, speaks to members of the media on Monday, Nov. 15, 2010, in front of the 'Wall of Hope' in Portland, Ore. Horman answered questions from the media but no new information or developments were announced.(AP Photo/Steve Dykes)
Desiree Young, mother of missing 7-year-old Kyron Horman, speaks with reporters at the "Kyron's Wall of Hope" Friday, Oct. 1, 2010, in Portland, Ore. The seven-year-old disappeared from the school June 4 and is still missing as officials continue the investigate the case. (AP Photo/Rick Bowmer)
Desiree Young and Kaine Horman, Kyron Horman's biological parents make remarks during a news conference Friday, Aug. 27, 2010, in Beaverton, Ore. Young reiterated her opinion that the boy's stepmother is responsible for the disappearance. (AP Photo/Rick Bowmer)
Terri Horman accompanied by attorneys Peter Bunch and Stephen Houze , right. leaves the Multnomah County Courthouse after a brief hearing on Wednesday, Aug. 25, 2010, in Portland, Ore. (AP Photo/Ross William Hamilton, Pool)
"Kyron's Wall of Hope" is shown after it is reassembled in front of Tualatin Valley Fire and Rescue station 368 in Portland, Ore., Tuesday, Sept. 7, 2010. The cyclone fence which, was removed before school started from its' original site in front of Skyline Elementary School, was reinstalled in its' entirety. Kyron Horman has been missing since June 4.(AP Photo/Don Ryan)
FILE - In this Friday June 11, 2010 picture, the family of missing 7-year-old Kyron Horman, from left, Tony Young, his mother Desiree Young, Terri Horman and his father Kaine Horman stand together at a news conference at Brooks Hill Historical church across from Skyline Elementary School in Portland, Ore. Detectives investigating the June 4 disappearance of a Portland boy from his school are focusing on the child's stepmother, Terri Moulton Horman, by distributing a flier Friday, June 18, 2010 showing her picture and asking if anyone saw her at the school that day. (AP Photo/Greg Wahl-Stephens)
Officers Mary Lindstrand, right, of Multnomah County and Dave Thompson of Washington County set up a photo of missing 7-year-old Kyron Horman, prior to a news conference at Brooks Hill Historic church across from Skyline Elementary School in Portland, Ore., Monday June 7, 2010. Authorities have not yet called the disappearance a kidnapping, but they're describing him as a "missing endangered child." The FBI has joined the search. (AP Photo/Greg Wahl-Stephens)
Desiree Young, left, the mother of missing 7-year-old Kyron Horman, with stepmother, Terri Harmon, listen to a statement by stepfather Tony Young during a news conference at Brooks Hill Historical church across from Skyline Elementary School in Portland, Ore., Friday June 11, 2010. (AP Photo/Greg Wahl-Stephens)
Discover More Like This
BACK TO SLIDE
"I need people to know I did not harm my son," says Terri. "I'm being unfairly portrayed in the media. I'm not this monster that people are suggesting that I am."
Terri, who was never named by law enforcement as a suspect but has remained under a dark cloud of public suspicion, says she wants to set the record straight and clear her name.
"I'm not guilty. I'm not a person of interest, I'm not a suspect, and there's a good reason for it: the fact is I don't know where he is. I don't know who has him," Terri says. "I love Kyron. I miss him very much ... I'm suffering, too, every day without him. People need to know that I have nothing to hide. I did not kill him, I did not kidnap him, and I just want him found. I'm an innocent person."
Why did it take Terri so long to speak out? Watch more from Wednesday's episode here. And on Thursday, Terri, who failed two polygraphs, answers questions about what some have alleged was suspicious behavior in the days and weeks following Kyron's disappearance.