Many years ago, in another life while I was a Relay Truck driver for the AA we had Mr Harris (K) 's car in for a long distance, unnaccompanied relay to the dreadded South!
His car was sitting in the garage overnight and in the wee small hours one of my mates said he heard a noise in its boot....
After poo-pooing him for half an hour someone else heard a noise from that side of the garage. (inside a large unit on an industrial esatate)
We ventured nervously in the direction of the car and there was another noise. The cars were parked in a row aginst the wall and the trucks across from them so there was a definite "them" and "us" area.
We opened the boot of his car, not something we ever bothered with, seen one boot seen 'em all, you know?
A large suitcase inside battered as hell was sat there.
You guessed it, the green horror was staring up at us!
But he never said a word, phew...
But we didn't find out what caused the noise either!