Diane Sawyer to conduct first interview with Amanda Knox

ABC News has scored a coup by landing the first interview with an exchange student accused of her roommate’s murder in Italy.

Amanda Knox will talk to Diane Sawyer in conjunction with the release of her book “Waiting to be Heard.”

Knox was freed from an Italian jail in October 2011.

The interview will be conducted and air April 30 in a primetime special, the same day as the HarperCollins book release. Portions will also air on “Good Morning America,” “World News” and “Nightline.”

Knox, originally from Seattle, was in an exchange program in Perugia, Italy. Her roommate Meredith Kercher (from South London) was found stabbed to death Nov. 1, 2007. She was found in her bedroom in a flat she shared with Knox and her Italian boyfriend Raffaele Sollecito.

Although Rudy Guede was convicted of the murder and sexual assault of Kercher in 2008, Italian prosecutors maintained Knox conspired with the boyfriend in the murder, and she was sentenced to 26 years in prison. Sollecito also received 25 years, but both of their convictions were vacated in October 2011.

Some motives investigated include a Satanic ritual, a sex game that took a bad turn and an argument about chores.