jeff kane was cleared.have done so many things that raise suspicion early on, ultimately, he had an alibi the checked out. he clocked in and out of his job at boeing the day sandi went missing. colleagues had seen him there and after work he was with friends who vouched for him. finally, greg johnson was off the list. how well do you remember that moment where the police came to see you and said, you are not a suspect anymore. >> i remember it very well. it was relief. it was a good day for me. it really was. >> reporter: of that left sandi's friend from work , cliff reed. cold case detective, now retired, decided to see if he he could find physical evidence tying cliff reed to the death of cindy johnson. it turned out the passage of time gave police need tools. >> forensics have changed over the years and there was the potential of testing a lot of things that would not have been able to be tested back then for dna specifically. >> reporter: they went back to work cliff reed lived in 1996. all these years