Having a child go missing is the absolute ultimate nightmare of any parent. It happens, no matter what precautions people take, and afterwards there is only the guilt of 'what if....'. Even if you've stayed with your child non stop but cot death happens 'what if....'. If you've let your child out to play in the garden with a fence and locked gate with their friends but they've escaped for a spy game or whatever 'what if....?.
Please don't say they were bad parents. I don't know the full story. We come across bad parents in my job all the time, and their kids aren't abducted, murdered or missing.
It's an evil, nasty lottery. If someone goes looking for a child to abduct they'll find one and we need to face that fact.
I am a fully aware parent, but I fear constantly - even to the extent that I am aware that someone could boink me over the head while I walked her to nursery, knock me out and abduct her.
I'm fairly paranoid, and I know that's not healthy. But I also know it only takes a second. However, on holiday I would hope my child was safe. I'm thinking of scenarios where I've sat on the balcony in my appartment. Any one could have opened the door and abducted my child. I really do check every few minutes, but that's all it takes.