Since the horrifying footage of her emaciated son being forced to dig his own grave in the terror tunnels of Gaza went around the world, Galia David has barely left her home.

She had already endured nearly two years of unimaginable torment after Evyatar was kidnapped from the Nova festival in southern Israel with his best friend, Guy Gilboa-Dalal.

Both 24-year-olds spent their first weeks of captivity bound hand and foot with bags over their heads, blood dripping from their wounded limbs.

The last sign of life had come in February, when Hamas cruelly filmed them watching other hostages released, and then returned them to the tunnels.

But Friday's video was of a different order of depravity. 'He looked like a skeleton,' dance instructor Galia tells the Daily Mail of that haunting image. 'It is sadistic torture.'