Amanda Knox, a US student who was accused and then cleared of charges for murder will talk about the trial for the first time the day her new book is being released.

Amanda Knox was charged and sentenced to 26 years of imprisonment for the murder of British student Meredith Kercher in 2007. After spending four years in prison, the 25-year-old was released in 2011 by an Italian court, on appeal. Knox has now written a book titled "Waiting to be Heard," which talks about the four years she spent in jail and will also reveal details surrounding her case that have never been revealed before, said a spokesman of publishers HarperCollins.

The book is scheduled to be published this April. The day the book will be released; Knox will speak about the sensational case with ABC's anchor, Diane Sawyer, in an interview to be broadcast April 30, 2013.

Knox and her boyfriend Raffaele Sollecito were charged with the sexual assault and murder of Kercher after her body was found in her apartment in a pool of blood November 2, 2007 and the couple was photographed kissing and cuddling outside the scene of the crime.

During the four years of imprisonment, Knox's parents reportedly spent over $1 million on legal, travel and living costs to be at her side during the murder trial and her appeal. They undertook a second mortgage to pay for Knox's lawyers and ultimately successful acquittal.

The book deal was announced February, 2012. Some 20 publishers went into intense negotiations for publishing rights of the book. Knox met with seven of them and finally settled for a $4 million deal with HarperCollins. Though broadcasters are not allowed to pay for interviews, they have found a roundabout way of paying by buying the rights to the interviewee's book instead.

HarperCollins announced that they will cope with their investment by selling TV interview rights at the back of the book.