In 2012, New York lawyer Jason Bohn killed girlfriend and Weight Watchers exec Danielle Thomas in their apartment by strangulation.
The four-minute long voicemail that was accidentally captured by Bohn’s pocket dial was first revealed when it was used as evidence during his trial.
The recording has yet to be heard publicly outside of the courtroom.
The Associated Press reports that CBS requested a copy through the Freedom of Information Act because its contents were crucial to the jury’s deliberations and were used by both the defense and prosecution.
“We do not use an enormous amount of it, less than some of the people who put the whole text out,” said Susan Zirinsky, senior executive producer of “48 Hours.” “Hearing it is pretty chilling.”
Janie Thomas Bright, mother of the victim, said she plans on muting the television during the audio recording.
“My mother and I begged them not to use it,” Bright said. “But once the trial was complete it was in the public record.”
The episode will air at 10 p.m. May 10.