Instead of pictures of his newborn he was confronted by live images of Ondrej naked in the cellar — beaten and chained.

Cops swooped on the house next door and also freed a girl posing as an adopted sister aged 13 and clutching a teddy.

She later turned out to be 34 — and one of the torturers. The boys’ mum accused the woman — fellow cult member Barbora Skrlova — of brainwashing her. She wailed: "Terrible things have happened. I realise it and can’t understand how I could have allowed it."

The court in her home city heard the abuse of her children was co-ordinated via text messages sent by a leader of the Grail Movement cult — who was known only as the "Doctor".

Her sister Katerina was also involved.

The abuse trial of the boys’ mum, another relative and their bogus sister Skrlova — who fled and was later found posing as a boy in Norway — continues.

Three others also face charges.