[user104658]

Originally Posted by Niamh.

Exaaaaactly, any number of things could go wrong and are likely to go wrong when you leave 3 babies alone like that, even the night before something went wrong when all three woke up alone and scared, kate and Gerry knew this but still left them the following night

Yeah like an abduction by Navy Seal trained ghost paedophiles or perhaps,

just as an out there thought,

drowsily clambering onto a couch and falling off the back, hitting your head on the rock solid slab flooring they have in Algarve resorts, bleeding out on the floor only to be discovered later by someone who may or may not panic for reasons which may or may not include the suspect-yet-surprisingly-common practice of sedating children with small doses over the counter meds used, for example, as a solution if they had awoken confused and distressed the previous evening.

It's probably the first one of course, anything else is pretty far fetched. Everyone knows that paedophiles have had stealth tech for years.