In this compelling and up-to-date examination, author Rupert Matthews looks afresh at key episodes of alien activity on Earth, and sheds light on the many mysterious phenomena associated with it. From Roswell to the recent release of the Pentagon material, the book dissects fascinating eyewitness accounts of communication and contact with alien beings, as well as chilling cases of abduction. It also sits through sinister evidence of government cover-ups. 12 special casebooks give in-depth and analysis of the most important encounters.