brand new correctional officer here at san quenton. i was working graveyard in a section called donor. >> this officer is a member of the investigative services unit, an elite team of cos that track gang activity and other threats to the institution. >> one night my partner and i were working graveyard. i was sitting with my back to a file cabinet just like this. there was a row of padlocks on the top handle. my partner and i were talking, all of a sudden, the locks started rattling back and forth together, clacking. he looked at it. i looked at it. see, i'm getting goose bumps just thinking about it. we both ran out of the office. we had no explanation as to what that was. we asked some other officers and they said that, you know, the unit is probably haunted. so never can tell. there was no explanation for it. there was no earthquake. the inmates weren't complaining in the unit about the ground moving. there were no wild animals in there. i didn't bull it, he didn't bump it. no telling. >> there's been a history of other strange phen