Robert Stack (1919–2003) was an American actor and television host, best known for his deep, commanding voice and intense presence. He gained widespread recognition as the host of Unsolved Mysteries, a true crime and paranormal documentary series that aired from 1987 to 2002. His serious demeanor, signature beige trench coat, and dramatic narration became an iconic part of the show's eerie and suspenseful atmosphere.

Before Unsolved Mysteries, Stack was a well-respected actor, winning an Emmy for his portrayal of Eliot Ness in The Untouchables (1959–1963). His decades-long career also included voice work, film roles, and even comedic turns in movies like Airplane!.

To this day, Robert Stack remains a legendary figure in crime television, with Unsolved Mysteries continuing to influence investigative docuseries and thrill audiences with its unsettling cases and chilling reenactments.