Prince Andrew exchanged "volumes" of emails with Jeffrey Epstein, the jounalist who revealed the "We are in this together" message between the pair has claimed.
Daphne Barak, speaking on GB News' flagship US programme, The Late Show Live, said there had been "hectic traffic" between the pair - as well as the ex-duke's ex-wife Sarah Ferguson.
Ms Barak told host Bev Turner: "I have to tell you, I am sharing with you that there was a volume of emails between them.
"There were not one or two or three. There are volumes of emails between them there. It was very hectic traffic."
She also claimed that the trio's relationship was "much more tight" than it has appeared so far - which has already seen the disgraced prince resign his ducal titles.
The former duke has previously said he severed all communication with the paedophile financier in December 2010.
However, the newly leaked correspondence appeared to show the duke writing to Epstein on February 28, 2011.
In the email, Andrew stated they were "in this together" and would need to "rise above it", suggesting ongoing contact between the pair.
PICTURED: Prince Andrew and Jeffrey Epstein, photographed together in 2000 | GETTYBarak exclusively told the People's Channel that there were "more things coming next" - but cryptically added they would not be "what people expect".
The renowned journalist elsewhere claimed that her friend Sarah Ferguson "complained" and asked for certain details not to be printed.
However, Ms Barak said she informed the former duchess she would "not do her dirty laundry".
The emails allegedly show Fergie worrying about her "relationships with children’s charities" as the Andrew-Epstein scandal unfolded.
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Andrew has previously said he severed all communication with paedophile financier Jeffrey Epstein in December 2010
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Prince Andrew's statement on Friday evening read: "In discussion with the King, and my immediate and wider family, we have concluded the continued accusations about me distract from the work of His Majesty and the Royal Family.
"I have decided, as I always have, to put my duty to my family and country first. I stand by my decision five years ago to stand back from public life.
"With His Majesty’s agreement, we feel I must now go a step further. I will therefore no longer use my title or the honours which have been conferred upon me.
"As I have said previously, I vigorously deny the accusations against me," he added.
Fergie allegedly worried about her 'relationships with children’s charities' as the Andrew-Epstein scandal rolled on
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The prince has strenously denied all claims against him, and came to an out-of-court settlement with accuser Virginia Giuffre three years ago - which contained no admission of liability, no apology.
Following Friday's news, Andrew will no longer serve as a Counsellor of State on the King’s behalf.
Counsellors of State have the authorisation to execute some of the official duties of the Sovereign, should they be unable to do so.
GB News understands Andrew's de-duking clarified a decision that non-working members of the Royal Family would not be called to serve in such a role.