Dr Fia Johansson (l) handed power of attorney over Julia Wendell (r) who has claimed she believes she is Madeleine McCann (inset)

Celebrity private detective granted 'power of attorney' over woman who believes she is Madeleine McCann

Julia Wendell, a 21-year-old Polish woman, says she thinks she could be Madeleine McCann

Woman claiming to be Madeleine McCann suffered 'mysterious skull fracture that partially erased her childhood memories'

Dr Fia Johansson (l) and Julia Wendell (r). inset Madeleine McCann

Woman who believes she is Madeleine McCann hasn't made any money from recent fame

Julia Wendell says she could be Madeleine McCann

Woman who claims to be Madeleine McCann says all she wants to do is 'help people who have experienced trauma'

Julia Wendell (l) and Madeleine McCann (r). Inset Praia da Luz

Woman who believes she is Madeleine McCann claims 'sex trafficker is trying to lure her back to Portugal'

Julia Wendell playing piano (l) on Dr Phil (top r) and Madeleine McCann (bottom r)

'She played for my sister and she cried': Woman who believes she is Madeleine McCann plays piano in moving video

Dr Fia Johansson alongside smiling photo of Julia Wendell - the girl who claims to be missing Madeleine McCann

Who is Dr Fia Johansson? The Private Detective helping woman who claims to be Madeleine McCann

Julia Wendell selfie alongside picture of young Madeleine McCann

Julia Wendell's Madeleine McCann claims: The story so far

Julia Wendell on Dr Phil (l). A beach like her first childhood memory (top r). Bottom right Julia as a child and Madeleine McCann

Woman claiming to be Madeleine McCann says first memories of 'buildings and beach' similar to where girl was last seen

Julia Wendell on Dr Phil (l) and with Dr Fia Johansson (top r). Bottom Madeleine McCann

Woman claiming to be Madeleine McCann denies stealing birth certificate and photos from her family

Julia Wandell on US show Dr Phil (l) and with Dr Fia Johansson (top r). Madeleine McCann (bottom right)

'Why I believe I'm Madeleine McCann', woman claiming to be missing Brit reveals all to US talk show host

Julia Wendell singing karaoke (l) and with Dr Fia Johansson (top r). Madeleine McCann (bottom r)

'What if I'm someone I don't want around?': Woman who thinks she is Madeleine McCann's telling karaoke message

Dr Fia Johansson with Julia Wendell (l) and younger Julia (inset). Madeleine McCann (r)

Private detective reveals 'small detail' which convinced her woman may be Madeleine McCann

Julia insists she is Madeleine McCann

Woman who claims she is Madeleine McCann tells Dr Phil she will take whatever tests are necessary to prove claim

Polish woman Julia Wendell has threatened to sue the mother of the family who raised her in Poland

Woman claiming she is Madeleine McCann threatens to sue mother who raised her in Poland

The search for Madeleine McCann is set to get a funding boost

Madeleine McCann cops set to get £300,000 funding boost but 'eyebrows raised' in time of 'squeezed budgets'

Julia Wendell says she is Madeleine McCann

Woman who says she is Madeleine McCann demands medical record from Polish doctor she claims drugged her as a child

A woman from Poland claiming to be Madeline McCann is to appear on popular US TV show Dr Phil as she awaits DNA results.

Woman claiming to be Madeleine McCann to appear on hit US TV show Dr Phil