Chilling new interrogation video shows a twisted trans killer calmly confessing to executing both parents — blaming it on the mom trying to thwart ongoing gender transition surgery.

Mia Bailey, now 30, copped to slaughtering mom Gail and dad Joseph inside the family home in Washington, Utah, in 2024, the footage obtained by KUTV shows.

The twisted murderer, who was born male but had recently changed name while identifying as female, admitted a years-long decline in mental health, telling investigators it was “why I needed the surgery.”

“She was trying to sabotage it. She always had boundary issues,” Bailey said of her mom.

“I had one thing going on, and she took that away from me. She can’t say sorry to save her life, apparently. And I gave her so many chances throughout my life.”

“So much for family,” Bailey added. “I spent years trying to fix that broken-ass family. Eventually, I had to get out, either going to kill myself or kill.”

Elsewhere in the interrogation, Bailey went on to coolly detail gunning down both parents.

“I went to my parents to do the deed. Kill them,” the killer said. “It was spur-of-the-moment. I don’t regret it. I hate them. That was the last straw.”

The troubled offspring confessed to firing off 12 rounds with a gun bought from a pawn shop nearby, before fleeing cops.

Bailey then tried to shoot a brother through a locked door, but he managed to escape and call 911 from a neighbor’s home.

The killer, who had only just legally changed name and sex, then fled the scene.

Bailey, was eventually nabbed after an hours-long manhunt, ended the disturbing interrogation by insisting that people should be able to undergo gender transitions without interference.

The killer was slapped with two 25-years-to-life sentences in December after pleading guilty to the heinous murders.