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.
Where to Watch Mister X
Cast of Mister X
Fred MacMurraySteve Douglas
Don GradyRobbie Douglas
Barry LivingstonErnie Thompson
Stanley LivingstonChip Douglas
William DemarestCharley O'Casey
Dawn LynDodie Harper Douglas
Lew Ayres
Charles Bateman
Frederick de CordovaDirector
Lois HireWriter
Edmund L. HartmannProducer
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