Joshua "JJ" Vallow and Tylee Ryan have been missing for five months and their mother, Lori Vallow, has not cooperated with court orders to produce them. 

The children were last seen in Idaho in September, but the case also has ties to Arizona and Hawaii, where Lori and her new husband Chad Daybell were recently found by police. 

Lori and Chad have been named persons of interest in the case, but they have not been arrested. 

The head-scratching case will be featured on "Dateline NBC" on Friday, which can be seen on 12 News. 

Why hasn't Lori Vallow been arrested after the deadline to present her missing children passed?

"Dateline" will feature an interview with April Raymond, who had considered herself a close friend of Lori Vallow. 

Raymond told host Keith Morrison that Lori is "telling people (that) there's a lot of media hype around her right now and she's waiting for that to die down.

"I don't know if I would describe it the same way," she added. "I would describe it as something a little more serious, a lot more serious."

Here is the latest news regarding the disappearance of Joshua "JJ" Vallow and Tylee Ryan:

 Mother of missing child may have monitored son's class after he disappeared

 Grandparents seek guardianship of missing boy with Valley ties

 Former Arizona mother ignores deadline to bring two missing kids to Idaho

 Brother of missing kids with Arizona ties speaks out after their mom fails to produce her kids to law enforcement

 Security footage reveals abandoned storage unit full of missing Idaho children's belongings

 Here is what we know about the case of Joshua 'JJ' Vallow and Tylee Ryan

 Lori Vallow, Chad Daybell found in Hawaii, no sign of kids

 911 audio, bodycam video reveal more about man's death months before son went missing

 $20K reward offered for missing Idaho kids that moved from Chandler

•  'You have the opportunity to end this': Lori Vallow's oldest son makes passionate plea to mom

 Authorities search man's Idaho home where wife was found dead before stepchildren went missing

 She called herself God and threatened to kill him: Divorce docs shed light on bizarre final months of Vallow marriage

Shortly after 2 kids disappeared, someone shot at their family member

 Parents of children missing since October named persons of interest in disappearance

 2 Valley children disappear without a trace, under suspicious circumstances

 Police: Two missing Idaho kids last seen in September