One night, whilst on a camping trip to the lake-district something disturbs your sleep.
It's a mild night, and you have the tent to yourself, there is no noise
other than the soft distant snores from one of the other tents on your camp-site.
You decide that nothing is amiss and are about to return to the land of nod
when there is a bright flash of purple light from outside.
Intrigued and a little nervous you decide to:
Snuggle down into your sleeping bag and hope whatever it is goes away