eric holtzclaw has indefinitely delayed plans to retire. hello? all from an inmate a correctional facility? >> hello? >> reporter: on a scratchy phone line from behind bars, it's the accused calling. daniel holtzclaw. >> officer daniel holtzclaw. >> sexually abusing several women while he was on duty. >> reporter: the object of so much public scrutiny and scorn, about to speak publicly for the first time. daniel holtzclaw had told "20/20" he wanted to talk on-camera, but authorities will not allow it. they say, for his own safety. a former cop behind bars is a target. what made you want to talk to us? >> i want people to hear from me. how do i respond to these questions? so they could see the truth. i have nothing to hide. >> reporter: you say you're not guilty. you're telling me you never raped any of those women? >> absolutely. >> reporter: have you ever sexually assaulted any woman? >> i have never sexually assaulted anyone. >> reporter: holtzclaw says not only did he not commit these crimes, there were no crimes. he insists the women, all 13 of