Most of what happens in our world has been thoroughly investigated. But that's not true for everything! Read on to learn more about the events, activities, disappearances, and creatures that are yet to be explained.

Can you solve the mysteries that have puzzled scientists for generations? What happened to the crew of the Mary Celeste? Can people combust spontaneously? Did a whole playground full of schoolchildren actually spot a UFO? There are so many questions waiting to be answered.

This extensive guide to mysterious unexplained events covers natural mysteries, historical conundrums, baffling disappearances, paranormal events, alien visitors, and cryptozoology, with coverage of events from ancient times right up to the modern day.

The Unexplained will engage children and adults who are keen to probe into mysteries, ponder the existence of strange beasts, and unleash their inner ghost hunters!