that was that until weeks later when police came back here looking for johnny altinger. detectives went downtown to check on the report taken from trevor and marissa. and it didn't fit. that call was taken a week before johnny disappeared. besides, no victim ever came forward, no one claimed to have been tackattacked by a masked man. the whole thing sounded almost like, well, a scene from a movie. or just maybe a tv show about a serial killer. >> what attracted you to "dexter"? >> how he was able to explore that dark side, rationalize that it's okay to kill somebody. >> when "dateline" continues. to the military. and commitment is not limited to one's military oath. the same set of values that drive our nation's military are the ones we used to build usaa bank. from free checking to credit cards to loans, our commitment to the military, veterans, and their families is without equal. ♪ ♪ visit us online to learn what makes our bank so different. usaa. we know what it means to serve. ♪ ♪ ♪ [ male announcer ] people don't make a list of websites they want to see before they