I've had two Pandorean dreams recently which have disturbed me.
Last night's involved a moth in a car. A life-form detection system showed that a car had three life-forms inside when there were two passengers. My only conclusion was that the car itself was alive, a Transformer. I began to cut up the car to make it show itself, then in the back near the floor I saw a moth masking an alien spacecraft, a Krellian invasion ship containing millions of aliens ready to invade our space. I recognised that it was the culprit and the memory of how it got there magically appeared. I then flashed back to a quiz show years earlier in which I was Hugh Dennis. I detected the invasion plot before it was a danger and I decided to hide the aliens inside a caterpillar and erase everyone's memory of the incident. Now, a fool had accidentally moved the moth and uncovered the pupae, reawakening the aliens and making the invasion inevitable. I knew that my actions from years before were only ever going to delay the terrible invasion, and so I became resigned to my fate.
That was not so frightening as a similarly themed nightmare from a few days earlier. To cut a long story short an innocent bystander had accidentally released lots of monsters that I had under control. I had no choice but to accept their escape even though I knew that it meant the end of the world.