Amanda Knox Reveals in Book She Considered Suicide in Prison

April 18, 2013— -- During her four years in an Italian prison, Amanda Knox had to fend off unwanted sexual advances three times -- twice from male prison employees and once by a female inmate, according to The New York Times.

The Times obtained a copy of Knox's memoir, "Waiting to Be Heard," which is scheduled for release on April 30.

Knox spent years in Capanne prison awaiting trial for the 2007 murder of her British roommate, Meredith Kercher, and then while serving a 26-year prison term following her conviction. She was acquitted on appeal.

Her nearly 500-page memoir does not cover her life after prison and her most recent nightmare, the ruling in March by Italy's Supreme Court that she must be tried yet again for Kercher's murder.

Those details and more will be discussed in her exclusive television interview with ABC News anchor Diane Sawyer.

Watch Diane Sawyer's Exclusive Interview With Amanda Knox, April 30, 10 p.m. ET

According to the Times, Knox was in such a deep state of despair behind bars in Italy that she considered committing suicide by suffocating herself with a garbage bag.

Knox wrote in an author's note at the end of her book, "Until now I have personally never contributed to any public discussion of the case or of what happened to me, while I was incarcerated, my attention was focused on the trial and the day-to-day challenges of life in prison. Now that I am free, I've finally found myself in a position to respond to everyone's questions. This memoir is about setting the record straight."

Complete Coverage of the Amanda Knox Story

Knox, according to the Times, wrote about having her every move analyzed from afar -- including the video of her kissing her then-boyfriend, Raffaele Sollecito, outside the crime scene.

"First I showed not enough emotion; then I showed too much," she wrote. "It's as if any good will others had toward me was seeping out like a slow leak from a tire, without my even realizing it."

The Times described how Knox laid out her defense in detail -- writing that on the night of the murder she was at Sollecito's apartment smoking marijuana, reading a Harry Potter book out loud in German and watching the film "Amelie."

During her interrogation, she said, police sporadically slapped her on the back of her head.

Panicked and confused, when she asked to make a phone call.

"The guard looked at me like I'd asked for caviar and prosecco," she wrote.

She described her first moments of freedom after her acquittal -- writing that she was handed a touch screen Blackberry to make a call.

"I hadn't picked up a cell phone in years, and never a touch-screen," she wrote. "This device was as good as sci-fi to me."

Amanda Knox's memoir, "Waiting to be Heard," can be pre-ordered HERE and HERE

This story has been updated from an earlier version.