Piers Morgan has said he’s experienced the most ‘chilling’ interview he has ever done.

Piers Morgan

Appearing on Lorraine on Wednesday morning the Good Morning Britain host, 54, spoke about his new documentary Psychopath with Piers Morgan.

On the show Piers meets with and interviews US killer Paris Bennett, who murdered his 4-year-old sister in an attempt to spite his mother when he was just 13 years old.

Speaking about the interview the host said, “It was chilling. I have sat with a lot of killers, very dangerous people, I have never felt quite as chilled, in a bad way, as I did with that guy.’

Piers Morgan, Lorraine Kelly

Speaking on the preparation he had to perform going into the interview Pier’s told Lorraine he had to be wary of the killer’s genius level IQ.

READ: Piers Morgan meets killer Paris Bennett who murdered his four-year-old sister to spite their mother

“The FBI profilers we brought in to advise us said, ‘He will have done his research on you very thoroughly, he will try and play you and manipulate you’ and I really felt that. I felt like I was in a psychological combat with his guy.”

Besides intense interviews, Piers also talked about his need for a thick skin on the morning show.

Piers Morgan

When Lorraine asked Morgan if anything gets under his skin Piers pointed towards his love for the classic twitter rows: ‘I am very active on Twitter.

“I like all the rough and tumble. If some spotty geek in a dungeon wants to call me abusive names, I don’t care. So long as, gloriously, he can’t spell and then I can correct his spelling.”

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Not holding back Piers confessed he’s not satisfied completely unless they’ve completely erased their twitter presence altogether:

“My favourite thing on twitter is when you have ‘tweet deleted’ and then, minutes later, ‘account deleted’ where I have literally had them vaporised because my 6.6 million followers go after them so badly, they can’t exist anymore.”

Psychopath with Piers Morgan airs on ITV on Thursday night, at 9pm.