Desc: Secrets of the Unknown: Directed by Gilbert M. Shilton. With Martin Landau, Garry Chalk, Stephen E. Miller, Patti Allan. Narrated by Martin Landau, this documentary tells three stories of incredible events, ranging from crop-circles and space aliens to ghostly visitors from World War II. Dramatic recreations, eyewitness accounts and expert testimony help bring these astonishing stories to life.