Twelve year old Jaliek Rainwalker disappears after spending time in respite care.  His adoptive father is a person of interest in this case, but Jaliek has never been found.

Soures:

The Charley Project
The Post-Star "Behind the scenes Jaliek investigation quietly continues" by Don Lehman 8/24/2019
The Times Union "Jaliek Rainwalker's homicide case is cold 10 years after his disappearance" by Emily Masters 10/31/2017
Web MD & Mayo Clinic- Reactive Attachment Disorder