On Saturday, a new era begins for the BBC's beloved science-fiction series, "Doctor Who," the quirky and mysterious hero who time travels in a spaceship disguised as a blue police box, exploring strange worlds and occasionally saving the universe.

Peter Graves, who starred in the hit television series "Mission: Impossible" as well as the "Airplane" films, died Sunday of a heart attack at his home in Pacific Palisades, Calif. He was 83.

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