reporter: the trooper who would become the lead investigator, was david s childhood friend. they had the talk right there. dave, you know, we gotta clear you first. and i kept saying, just do it right, i said that repeatedly. reporter: as a former cop, david camm knew the score about spouses. you knew because of your experience they always look at the spouse. sure. you know, everybody s a suspect. in the beginning, you don t know. reporter: but in his case, david thought, it was a by the book formality. he was confident his friends would do all they could to find the killer. these were your brothers in uniform, these guys. right. you d ridden with them. i been to their . you had done a lotta homes. they d . tough stuff with them. they d been to my house. we d eaten together. we knew each other s families. reporter: i m at the indiana state police post and also present is david camm. reporter: in this audio tape of his first interview, that night
david thought, it was a by the book formality. he was confident his friends would do all they could to find the killer. these were your brothers in uniform, these guys. right. you d ridden with them. i been to their . you did a lot of stuff with them i had been to their house, and they had been to mine. we d eaten together. we knew each other s families. reporter: i m at the indiana state police post and also present is david camm. reporter: in this audio tape of his first interview, that night you can hear the troopers handling him with kid gloves out of respect. we re gonna try and find out what happened here. so we can bring that person to justice as best we know how. just do it and do it right. right exactly. so just ask me whatever you want to ask me. reporter: the questioner walked david through his day and his wife s. as far as david knew, she d followed her usual busy routine working, then shepherding the kids around after-school, returning home ab
followed her usual busy routine working, then shepherding the kids around after school, returning home about 7:30 pm. was the shooter waiting for her in the garage? or did her killer follow her in? the investigators asked david if anyone had been stalking kim, bothering her. if there was, she hadn t said a word. how bout phone calls? get hang-up phone calls, suspicious phone calls? not really. reporter: and they wanted to know if the husband could help them understand an oddity about the crime scene. why would kim s shoes have ended up neatly placed atop the roof of the bronco? i had no idea why those shoes were sitting there. does she ever kick her shoes off when she s driving? never seen her take her shoes off, never. you saw those shoes though. damn straight i did. reporter: as the investigators wrapped-up, they made sure david got some fresh clothing because they were sending his blood-speckled sneakers and t-shirt out for testing. we ll do everything we can
reporter: but in his case, david thought, it was a by the book formality. he was confident his friends would do all they could to find the killer. these were your brothers in uniform, these guys. right. you d ridden with them. i been to their . you had done a lotta homes. they d . tough stuff with them. they d been to my house. we d eaten together. we knew each other s families. reporter: i m at the indiana state police post and also present is david camm. reporter: in this audio tape of his first interview, that night you can hear the troopers handling him with kid gloves out of respect. we re gonna try and find out what happened here. so we can bring that person to justice as best we know how. just do it and do it right. right exactly. so just ask me whatever you want to ask me. reporter: the questioner walked david through his day and his wife s. as far as david knew, she d followed her usual busy routine working, then shepherding the kids around a
the spouse. sure. you know, everybody s a suspect. in the beginning, you don t know. reporter: but in his case, david thought, it was a by the book formality. he was confident his friends would do all they could to find the killer. these were your brothers in uniform, these guys. right. you d ridden with them. i been to their . you had done a lotta homes. they d . tough stuff with them. they d been to my house. we d eaten together. we knew each other s families. reporter: i m at the indiana state police post and also present is david camm. reporter: in this audio tape of his first interview, that night you can hear the troopers handling him with kid gloves out of respect. we re gonna try and find out what happened here. so we can bring that person to justice as best we know how. just do it and do it right. right exactly. so just ask me whatever you want to ask me. reporter: the questioner walked david through his day and his wife s. as far as david