Jack Osbourne’s famous family may have laid their lives bare in The Osbournes but his revelations about one family member have left viewers horrified.

Amid trials and the series’ first elimination, Jack, 40, shared why his grandfather Don Arden became one of the most feared men in music.

He confirmed rumours of ‘pulling guns on people’ and dangling musicians out of windows were real.

Jack said: ‘[Sharon] was his protege, he taught her everything and he did all sorts of screwed up things.

‘Had my mum sign all these documents and everything was in her name so he would never get in trouble…they would firebomb other record companies. That’s why my grandfather knew the Krays.’

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Arden worked as Black Sabbath’s manager and was at the helm when the grou

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