Skin-crawling photos show the haunting interior of a Connecticut “house of horrors” where a wicked stepmother allegedly imprisoned her stepson in wretched conditions for more than two decades.

The images were obtained by The Post just weeks after a judge ruled that Kimberly Sullivan, 57, could return to the Waterbury home, which was scorched by a fire that her 32-year-old stepson set to escape from her clutches in February, according to cops.

The house stands empty after the blaze, with most of the rooms reduced to bare beams and boards. Drywall and plaster have been ripped from most of the walls, while loose wires, dirt, debris, and broken glass litter the dark halls, which have been left all but uninhabitable.

One room, however, appears to have been untouched by the fire, offering clues to the tastes of the lady of the house.

In a hot pink den on the first floor, a large pair of women’s eyes with full red lips seductively peer across the room to a poster of a kitten in a lawn chair with “Lazy Days” scrawled over the top.

Hanging in a ceiling corner, a doll with blond hair and piercing blue eyes watches over the room.

In what’s left of the kitchen, a half-melted poster of Marilyn Monroe hangs over the counter.

But the rest of the house is barren, and upstairs, nearly all traces of the alcove where Sullivan’s stepson was allegedly held from when he was 11 have been burned away or knocked down after fire ripped through the room.

One things remains, however: A stained lace angel’s wing is pinned to the raw wood where Sullivan’s stepson spent years imprisoned, going to the bathroom in bottles, and counting cars out his windows to while away the endless hours.

The stepson — known only as “S” — weighed just 68 pounds when responding firefighters discovered him covered in filth as the home burned around him on February 17.

He quickly began telling investigators a horrifying tale — claiming Sullivan had held him prisoner for more than 20 years, withdrawn him from school as a child and locked him in an 8-by-9-foot storage space with just scraps of food and water for 22 hours a day or more, according to authorities.

Sullivan was seen at her home after the fire, but arrested within weeks and accused of unlawful restraint, kidnapping and other abuse charges. She pleaded not guilty.

When Sullivan posted $300,000 bail and was freed days later, a judge issued a protection order for her stepson, who listed the Waterbury home as his address.

That detail barred her from going back to the house, and she petitioned a Connecticut court to amend it since her stepson was not living there. On Oct. 3, a judge ruled in her favor, NBC Connecticut reported, allowing her to return.

But it remains unclear if she’s been back since — with the home appearing completely forgotten and neighbors seeing neither hide nor highlighted hair of her.

“It’s all open and it looks abandoned to me,” said next-door neighbor Zeffrey Guarnera, who hasn’t seen Sullivan since she posted bail. 

“There was something I never really liked about her,” the 55-year-old said. “There was something weird about her. I can never tell you what it was, but all our other neighbors are very friendly, wave and say hello.”

And even more scarce was the stepson, who Guarnera didn’t know existed until he was carted out of the home.

“There was no him,” he said. “There were two daughters, that’s who I ever saw. When I found out there was a him, I was shocked.”

Sullivan has denied holding her stepson captive, and has instead blamed his father — who was living in the home until he died last year — for what happened to him.

Her lawyer also said the stepson could have walked away whenever he wanted.

“This is a woman who has never committed a crime in her life,” Sullivan’s attorney, Ioannis Kaloidis, said after court Wednesday.

Sullivan is expected back in court on Halloween.