"They were chained to the ground with a timed lock. It should have opened ages ago. Unfortunately, instead of setting it to a ten minute delay, it was set to a ten hour delay."
"All she has to do is stay like that all night, wait for them to fall asleep, and then go and get the key. Only problem is they are all sleeping in the living room, so she'll have to to careful walk over them to get to the key. Hopefully she doesn't slip and wake one up."