A depraved mother and her two trans lovers allegedly tortured and killed her developmentally disabled 7-year-old son, who was found dead and duct-taped inside a closet in her Ohio home.

The body of little William Evans, 7, was discovered by police on Thursday at the family’s Cincinnati house, and the horrific scene shocked even hardened law enforcement officers and medical professionals.

Hamilton County Coroner Lakshmi Sammarco told reporters at a press conference on Tuesday that she “opened the closet door” at the Evans residence and “just froze for a while.”

“The cause of death for this little boy was blunt trauma to the head,” she continued.

The boy’s mother, Kaitlin Evans, 38, and her live-in partners, Nessa Keaney, 23, and Kirby Rankin, 33, allegedly burned, beat and water-tortured William, authorities said.

The trio of suspects, who were arrested Thursday, are facing murder and child endangerment charges.

Veteran homicide detective Kyle Smith testified in court on Friday that the case was “the most disturbing” example of abuse he’s ever witnessed, FOX19 reported.

“In my 21 years of law enforcement experience, this is probably one of the most disturbing examples of child abuse that I’ve witnessed: physical beatings and blunt force injuries from striking devices on the face, torso, back, and upper and lower extremities,” he said in court, according to FOX56.