reporter: in that electronic haystack, a sharp-eyed cop noticed a call around the time they believed brandy was killed. it was made from a number with a 310 area code now normally that s southern california. the county lawmen traced that 310 number back to an anonymous disposable phone a burner purchased in zanesville a week before brandy died. i get the call records for the 310 area phone, and start combing through those. he only called two people. a second burner phone and josh daniels. those were the only two. reporter: was this their breakthrough? that burner phone, at the right time, right place, had called josh s phone in alaska. then the phone techs did another extraction of josh s phone, and they retrieved something josh thought he d deleted. a voicemail that was left on josh daniels cell phone from this california area code.
they retrieved something josh thought he d deleted. a voicemail that was left on josh daniels cell phone from this california area code. hey, what s up, man? it s me. hey, hit me up on this phone right here whenever you need to talk about something. hear me? holla at me later. bye. reporter: detective hittle s ears perked right up when he heard it. i listened it to and now i know that phone, 310, is sirius underwood s. that is his voice. reporter: the detectives wanted another, technically deeper dive into sirius i-phone, which they d returned to him. sirius came downtown again, as requested, but while the cops were preoccupied chasing down a search warrant for his device, he outfoxed them. sirius found a computer and remotely wiped his phone clean. when i reached in i got sirius phone, i could see that it had been reset, factory restored from the icloud. so whatever story he was gonna tell, you weren t gonna hear it? there was nothing left on that phone. pretty c