Lawyers want help finding a six-year-old boy at the centre of family court litigation who has gone missing with his businessman father.
Solicitors say Mani Dad vanished from his home in Kielce, Poland, in January.
They think that he is in the UK with his British father Zayn Dean - 47- who is also known as Dholtana Dad.
Mani's Polish mother Leyla Dad, 33, has launched proceedings in the Family Division of the High Court in a bid to trace her son.
And a judge has given lawyers permission to reveal detail of the case in the hope that members of the public can help find the youngster.
Detail of the case was revealed today in a statement from lawyers - solicitors Anne-Marie Hutchinson and Katherine Res Pritchard, who work for law firm Dawson Cornwell, plus barrister Mehvish Chaudhry - representing Ms Dad.
Lawyers said the couple had married in England in 2008 then moved to Poland in 2013.
They said in 2014 Mr Dean returned to England and Mani stayed with his mother in Poland.
Lawyers said Ms Dad had agreed that her estranged husband could take Mani on a "short trip" to Warsaw in January 2015.
They said Ms Dad had Mani's kept British and Polish passports.
"The mother spoke to Mani on 5 January 2015 and the father was due to return Mani to his mother's care on Tuesday 6 January 2015," said the statement.
"However the father did not return Mani as agreed.
"Instead, on 6 January 2015 the mother received an email from the father telling her that he and Mani were on their way to the UK via Germany.
"He told her that he had obtained temporary travel documents for her and for Mani.
"It is still not known how or if travel documents were obtained for Mani enabling the father to remove him from Poland and bring him to this jurisdiction."
The statement said: "This is a desperately sad case involving the removal of a very young child from his home in Poland and separated from his mother who has been his primary carer from birth."
Lawyers said father and son had not been "seen or located" since January and they said Mani had been "wrongfully removed" from Poland.
They said Ms Dad had begun legal proceedings under the terms of the 1980 Hague Convention on Civil Aspects of International Child Abduction.
Mr Justice Bodey had given permission for detail to be released to the media after analysing the case at a private High Court hearing.