I lost my cat in the house on Saturday night, we've had her nearly a year and a half, so she's not even got an excuse for hiding...
I went to feed the cats and only one appeared, so I wandered round the house a bit calling her, she didn't appear (she usually does) so I started looking in bedrooms and cupboards, still no cat.
She quite often sneaks up to bed with DD so I went and looked again, D woke up a bit - I said, I'm looking for the cat, she nodded and went back to sleep, still no cat.
I thought maybe she had run outside when I nipped out earlier, now she does go out, but not at night and it was about -3, so I went to call her in (again she usually comes) still no cat.
So, I'm now at about 2am, peering outside, wanting to go to bed - but worried about the kitten freezing if I do (like I said, she's nearly a year and a half, but for some reason she's still the kitten, lol)...off I go out in my winter gear, wandering round cars whistling and shouting flumpy
(her name's actually flump, but she answers better to flumpy) till it gets too cold for me.
I come back in wait until I've heated up a bit and go and call her again, before finally giving up just after 3am - only I can't sleep as I'm worried she might be wanting in and I won't hear her (she's got the world's tiniest meow) and I don't drop off till about 4 am.
I get up and she's been in DD's bedroom all night
DD says when I said I was looking for the cat she thought I was asking if she had the cat, so she nodded - DD then says, that the cat was in fact on teh window sill most of the night behind the curtains...
That means that all the time I was outside acting like a complete numpty and half dying of hypothermia - the cat was sitting on a window sill inside my warm house, WATCHING ME 
Good job I'm quite fond of her really. 
I think they like scaring you, like a little cat hobby or something, lol