'OK,' I say. 'As I see it, there are only two possibilities. One is for you to stay here and I'll leave. The other is for you to come home without me. Either way he'll think you're alone. But how will I know when to come back. If I come back too soon, the trap won't work. and if I come back too late ... well, I'll be too late. I don't see how this can work and you can be safe. It's just too big a risk.'