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. work as hard as we can to