By James Murray
The former Portuguese police chief Goncalo Amaral is ready for a new legal battle with Kate and Gerry McCann after writing a second book about her missing daughter Madeleine.
Mr Amaral's book will be published in Portugal next month just before Kate published her book entitled Madeleine fundraising.
could not come at a worse time for Kate, 42. She hopes that someone reading your book is presented with information about the person who took his daughter on May 3, 2007. (Item: Although it seems in no hurry to receive the information given that the book is finished since last November).
David Edgar, a private investigator for the McCanns is also ready to strengthen its team in Portugal to react quickly to any new track produced by Kate's book. It goes on sale in the UK on 12 May and a week later in Portugal.
The McCanns have already fought a costly legal battle on the occasion of the first book of Mr. Amaral on the case. Entitled Maddie: The Truth of the Lie, was pulled from the shelves for several months before being allowed out again for sale.
On Friday the McCanns lost an appeal to the Portuguese Supreme Court to stop the return of his first book on the shelves.
in Mr Amaral's book presents the theory that Madeleine died in apartment 5A at the Ocean Club in Praia da Luz in the Algarve. His conclusion angered the McCanns, who insist that there is no evidence to suggest that Madeleine died there and still have hope she's alive.
Now, stage is set for a new legal battle. Sophia, wife of Mr. Amaral said: "Gonçalo has been working on his book for about six months, spending days and nights evaluating all the evidence. Has put a lot of work into it. The title has not yet been decided and the date of publication will be decided this week.
"At this stage does not mean much, but say that his research was cut short and explain what he would have done if he had been allowed to continue. The book is not about Madeleine. It provides the history of other major cases have been involved.
"The time of this new book is just a coincidence, nothing was planned. We are not trying to make money on the fourth anniversary of the disappearance of Madeleine and not want to fight Kate's book. "
Mr. Amaral was a senior officer in the case but was dismissed after criticizing British police for an alleged lack of cooperation.
After resigning from the Judicial Police, has become a bestselling author in Portugal and appears regularly on television news. Attempted to post The Truth Lies in the UK for no publisher has agreed for fear of being sued for libel.
is said that Kate McCann has been warned by his editor to be careful of saying about Mr. Amaral. However, it recounts his frustration towards him and his anger at what was the case.
The Sunday Express can also reveal that Mr Edgar has been made regular trips to Portugal to investigate clues in recent months.
A source said: "The investigation is very active. There is hope that Kate will book someone to come forward with this key piece of the puzzle. "