The twins sit cross-legged in front of an immense television, transfixed by their video game.
Lamb and Lynx Gaede seem typical 13-year-olds, fighting for the next go with the joystick.
But the game is called Ethnic Cleansing – a video nasty where players try to kill as many black people as possible.
Watching these apparently angelic little girls playing their vile game is shockingly offensive. But it’s nothing compared to the hate that spews out of their mouths.
Lamb says: “Adolf Hitler was a great man who was only trying to preserve his own race in his own country.”
Her sister Lynx adds: “We are proud of being white. We want our people to stay white. We want our children to look like us – with blonde hair and blue eyes.
“We want to preserve our race. If you start mixing races, it all becomes one big mess and we don’t want that.”
All fascist bile, all learned from their mother and grandfather, red-necked neo-Nazis who have turned the sweet-faced twins into the darlings of the crazy Right.
Lamb and Lynx, in their smiley Hitler T-shirts, perform pop songs about white supremacy and celebrate the Nazis as heroes. Their band, Prussian Blue, is named after the residue left by Zyklon B, the poison used to gas millions in Nazi concentration camps.
They have outraged the vast majority of Americans since forming three years ago. But their popularity is growing.
They headline Holocaust-denial events organised by the neo-Nazi National Alliance and are supported by hard-core skinhead supremacist bands like Skrewdriver.
And while all-white crowds whoop their approval, the twins execute Sieg Heil salutes while belting out lyrics such as “When black masked men come bashing down the door. Where freedom exists only for those with darker skin.”
They recently demanded that money they donated to the victims of Hurricane Katrina should go to whites only.
It is little wonder the twins are so repellent – they have been immersed in the far-Right movement since birth. Parroting beliefs she learned on mother April’s knee, Lamb says: “Men like Adolf Hitler and Rudolph Hess are heroes. Hess was arrested when he went to England to sign a peace treaty and was imprisoned for the rest of his days.
“We admire them for what they stood for. They were prepared to do whatever it took, no matter what the cost.”
Lynx chips in: “Lots of things were exaggerated about the Second World War. We don’t believe that six million Jews were executed. I mean, there were not even that many Jews alive then.
“We know there were concentration camps but they had swimming pools and tennis courts there.
“That’s not how you are going to treat people if you are getting ready to kill them by putting them in gas chambers and burning them up.”
Schooled at home in Bakersfield, California, by their 39-year-old mother, the girls never had a chance of a normal childhood.
April, who is separated from the twin’s father, says: “I was unhappy with what they were being taught at school. Some of the history events were being misrepresented.
“So I took them out of school and found books that were written before the civil rights movement.
“They were being taught things that included the first black man that did this, the first Asian man that did that so I decided to show them things that white man had done.” April’s own abhorrent opinions come from her father, Bill, who surrounds the family with symbols of his twisted beliefs.
Bill Gaede wears the swastika on his belt buckle, on the side of his pick-up truck and he’s even registered it as his cattle brand with the Bureau of Livestock Identification.
“To him, it’s important as a symbol of freedom of speech,” April says. But when it comes to making money, the family are prepared to sacrifice some of their bigoted zeal.
April explains: “We were very careful to remove all Nazi references from the CD because we wanted to sell it in Germany and they have such strict hate laws there.
“But we’re not spreading hate. Just a message that we strongly believe in – that our race is dwindling by the day and needs to be preserved.”
Meanwhile, Lamb and Lynx are apparently winning support from a younger audience, rather than the usual skinhead neo-Nazis dross.
Lamb grins: “To have so much support is absolutely unbelievable.”
And absolutely sickening.