The Twilight Zone (1985) (1985)

S2E1 The Once and Future King / A Saucer of Loneliness

An Elvis impersonator finds himself mysteriously sent back to the 1950s, where he encounters the genuine Elvis Presley, who mistakes him for his deceased brother. Meanwhile, a shy waitress witnesses a radiant UFO and receives an important message that piques everyone's curiosity. However, she chooses to keep the contents of the message to herself, leaving everyone in suspense.