The show had an unusual amount of roles played by more than one person: two Darrins, two Gladys Kravitzes, two Louise Tates, two of Darrin's father.
Dick York left the show in 1969 due to health problems; his role of Darrin was taken over by
Dick Sargent. When
Alice Pearce died, her role of Mrs. Kravitz was taken over by
Sandra Gould.
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