The Man Who Fell to Earth. Poster of the 1987 movie and cover of the 1963 book
VS3
The Man Who Fell to Earth
Walter Tevis, 1963
movie vs book
Bobby Roth, 1987

Thomas Jerome Newton is a humanoid alien who falls to Earth from a distant planet, landing in New Mexico. Appearing as an Englishman, Thomas has arrived on Earth on a mission to bring water back to his home planet, which is experiencing a catastrophic drought. Newton swiftly uses the advanced technology of his home planet to patent many inventions on Earth.