she had just been dumped at whisky bay. the coroner's office took her into custody. >> the medical examiner discovered pam had been stabbed to death. she had also been sexually assaulted. >> pam was a beautiful, young woman, and she had a lot of admirers. and i thought, you know, maybe somebody just had a crush on her and took her off. i guess we wanted hope. i never dreamed that she was murdered. do you know what it's like to know you'll never have any more memories that all those happy times are gone forever? so, that's what it's like to lose your child. >> the medical examiner determined that pam had been killed on the night she disappeared. pam's husband, byron, had an alibi, and it was corroborated by others, so he wasn't considered a suspect. but police got a tip from a potential eyewitness. he thought he saw pam slumped forward in a white pickup truck on the night she went missing just a mile from where the body was discovered. >> this is a very desolate piece of interstate, very dark, not many vehicles at all. we ge