My Three Sons

Mister X

E23    Mar 14, 1970    TV-PG
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A bearded man of mystery confounds the Douglas family and the authorities alike, while Steve is working on a top priority project at home. Barbara soon identifies him as her former father-in-law.
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Cast of Mister X
  • Fred MacMurraySteve Douglas
  • Don GradyRobbie Douglas
  • Barry LivingstonErnie Thompson
  • Stanley LivingstonChip Douglas
  • William DemarestCharley O'Casey
  • Lew Ayres
  • Charles Bateman

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