it was for freemont school apartments. >> fremont school apartments was once a local elementary schooland the government converted it into some public housing. >> detectives tried the key in each of the 46 apartments. strangely, it didn't open any of them. but it did open a storage area door. >> it fit a door in the basement. and the door that it fit in the basement, when it opened up, that was an apartment that was closed. it had been taken offline because of flood issues. >> investigators asked forensic technicians to look for possible evidence inside that room. >> we ended up seizing all the evidence out of that offline apartment. and it was a tremendous amount. and we processed it for any kind of dna for tamika. and it ended up being a dead end also. ç >> no one in the apartment complex had seen a woman matching tamika's description. >> there was a lot of, i think, false hope during that time. >> then, the apartment manager offered a possible explanation. when a tenant is evicted, maintenance often removes the entire doorknob from the evicted tenant's apartment door and replaces i