waiting anymore. >> reporter: they're going to run. >> they're going to run. >> reporter: time to move. fast. they caught up to franc cano as he was boarding a bus. and steven gordon? they found him where he worked, an auto body shop next door to hardy windows. but -- >> he made a run for it. >> reporter: ran out the door? >> on a bicycle, yes. he had a little collision with one of our surveillance units and a little flying over the handle bars. and he was taken into custody. >> reporter: both men were charged with four counts each of first degree murder and forcible rape. >> hi, steven. >> and detective trapp prepared to confront a suspected serial killer. coming up. >> i knew this was going to be a lot different than any other interview i had done. he's cunning. manipulative. >> he didn't have to talk to you.