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Derren Brown has once again disturbed Channel 4 viewers after concerning scenes in his latest programme saw an audience member eat glass.

His latest offering, Miracle - which saw the hypnotist, mindreader and real-life Jedi master try out a series of new tricks on an audience of theatre goers - involved Brown bringing a women out on stage before he convinced her to swallow glass.

Brown smiled away as he revealed to Sarah that this was "no trick" but a simple mind over matter exercise that anyone can do - if Brown is there to talk them through it.

After placing the glass in her mouth, Derren asked Sarah not to swallow before telling her to 'wash it down with some apple', leaving viewers stunned.

One viewer was so concerned, they considered the Government might need to keep the magic man on their watch list.

They posted: "Derren Brown just made a girl eat glass yet nobody is scared of him as a national threat."

Read a longer reaction below.

(Image: Channel 4) (Image: Channel 4)

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"This should go without saying but I will tonight as we're filming..." added Brown. "Don't go home and start doing it."

The segment ended with the audience stunned and those at home also questioning how it was done.

(Image: Channel 4) (Image: Channel 4)

There were also a host of stunts including the apparent curing of a woman's rheumatoid arthritis.

Brown also eased the pain of a man's aching wisdom tooth and restored the 20:20 vision of a glasses-wearing audience member.

Before the show aired the master of psychological Illusion took to Twitter to say it was his "fave show of the lot" but the TV experience could be ruined by sceptics.

(Image: Channel 4)

Brown said: "Aww very fond memories. My fave show of the lot."

Speaking of his last outing, Pushed To The Edge, he said: "It’s a psychological experiment about social obedience. The terrifying truth is that when confronted with authority, our instinct is to obey without question.

"To such an extent that even the most moral person can be made to commit the most horrendous act – in this case, pushing someone off a building – just because they are told to."

When asked about regrets, Brown said: "No, there really haven’t. I’m in touch with most of the people I’ve done shows with over the years and they tell me that the experience has been a very positive one, often a turning-point in their lives.

* Derren Brown Miracle airs tonight, Monday 10 October, at 9pm on Channel 4