everybody. but we see the suspect. >> what does he look like? >> he's got on a hoodie, and he has on something around his head. >> was this reagan's killer? detectives weren't sure, but that's not the only video they uncovered. here's reagan withdrawing money at one of those atms. next to her, a shadowy figure in the passenger's seat. but who was he, and most importantly, where was he? with their friends'murderer at large, reagan's roommates were too scared to return to their apartment. >> it was your mom who pointed out, you guys can't go back to your apartment, that person has her keys. >> or driver's license, really. >> really he had access to our house for 24 hours before we realized. that was a terrifying after thought. >> turns out they had good reason to be afraid because around columbus, ohio, reagan's murder wasn't the only recent act of violence. >> coming up -- >> he just kept slugging me with his fist, and i kept