I've worked in care for years and will never forget once when staff came to find me just after midnight to say an elderly lady with dementia wasn't in bed and asked when I last saw her.
Long and short I did the first checks and walk round shortly after coming on shift but her room had a dodgy floorboard which if you stepped on would often wake her up and she was a poor sleeper in general. Popped my head just in the door, saw the bed covers untucked and ruffled, listened and was happy she was fast asleep so I carried on my checks and didn't go in again until the other girl said she wasn't there.
When I went in oh God... Bed covers were in exactly the same position they were as I'd seen them but staff on the earlier shift had just pulled them down ready for her to get into bed. Back then the system of shift handovers wasn't as thorough as it could and should have been so I'd not been told she was still up and watching TV lounge rather than in bed already as she would normally be.
Everyone split up and did a full search of the building and an upstairs fire exit was wide open. With no sign, I had to call the police and tell them flat out and up front I didn't know what she was wearing and hadn't seen her at all since coming on duty. Explained to him what happened and said how bad I felt but couldn't lie because we needed to work within a certain range and search area which given a few hours had passed, could have placed her anywhere from 100ft to a couple of miles.
They were literally minutes from getting the helicopter out and one of the police officers tripped over her laying fast asleep in reeds right at the far end of the garden. She was unharmed, unscathed but freezing God bless her but I couldn't shake that feeling of guilt and worrying “what if?” for ages afterwards it's still with me to this day.
By the next morning panic alarms were fitted to the external fire exits that pulled the cord and activate the alarm.