I used to work in a state inst for developmentally disabled. We were temp relocated to another building for remodeling of our bldg. Anyways...I was working one nite, 2nd shift. We had a locked pica unit. I saw one of the residents walking down the hall. Very distinct gait and very distinct yellow t-shirt w/ a happy face on it. I went into the ward to let staff know that they had an escapee. This was a serious situation because this particular resident, Larry, would ingest absolutely anything (from clothing to pens to belts to *ugh* a bird's head)...literally anything. He was also very reluctant to go back to his home ward (hence why I didn't bring him back myself...he needed two escorts). When we got back into the hall, less than 15 secs later, Larry was gone!! We searched the entire building! Outside, downstairs, all wards...he was NO WHERE to be found!!! This whole search lasted last than 10 mins because I had all extra staff looking for him. I was just about to call the house supervisor to let her know that we "lost" someone when out from the bathroom walks Larry w/ one of the staff. He had been getting his bath in the bathroom for the last 30 mins or so. Kind of freaky! I absolutely, without a doubt, saw Larry in the hallway. I never would've short-staffed the wards like I did if I hadn't seen him! Like I said, very distinctive gait, look, clothing. I took a lot of razzing that nite! They all thought that I was crazy. Anyways, come to find out the next day, after the story goes around that I am crazy (haha, gigglegiggle, funnyfunny)..............Larry had an identical twin brother who died in that building 10 yrs previously.