Its bad enough if one of your own goes missing, but when its one you're looking after!!!
He was there when I left them yesterday evening, but when I went in this morning he wasnt - I didnt worry too much because he did that once before when I looked after them and he was there when I went in the evening. But I've just been round to feed them, and he's still not there - now his owner did mention that he'd done this recently - stayed out all day and evening, can't remember when she said he came home, but anyway he did eventually. I also spoke to the neighbour and she said he does this from time to time - but I can't help worrying. I stayed there around an hour and fed the others etc, hoping he'd come back.
They have a catflap and 24/7 access, think I'm going to go back a bit later just to check if he's there or not, but if he's not I'm really going to be panicing - because as I said, with your own, you've sort of got an idea of the places to start searching - but of course I don't know where he goes - he's a bit of a hunter too.