House keys got left at a theatre, theatre kindly said they would post them back. Sadly, they sent them in a normal envelope and it arrived this morning, empty. So I want to replace all our locks (two front doors and the back door). OH grumbling that it's not necessary. Envelope obviously had our address on it, although the keys didn't. We will need to replace three locks and get a couple more sets of keys cut too as we leave spares with my sister. So not cheap. But better than being burgled right?