Highway Patrol (1955–1959)
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Lie Detector 

Dan Mathews utilizes polygraph testing to identify the individuals who are responsible for the violent robbery of an elderly motel owner.


Eddie Davis


Norman Jolley (screenplay)


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Episode complete credited cast:
Broderick Crawford ... Dan Mathews
Byron Keith ... Officer Peterson
Marie Stoddard Marie Stoddard ... Mrs. Ethel Carey
Gene Reynolds ... Henry Carey
Jonathan Hole ... Roger Taylor
Marvin Press Marvin Press ... Wilbur Morgan
Michael Garrett Michael Garrett ... Officer Mike Bergen
Art Gilmore ... Narrator (voice)


Elderly motel owner Ethel Cary is violently assaulted during an attempted robbery of her unbanked life's savings. The evidence all points to motel guest Roger Taylor, but both Taylor and Mrs. Cary pass lie detector tests. Mrs. Cary's nephew Henry is loudly insistent that Taylor is the perpetrator and motel guest Wilbur Morgan makes a point of volunteering information and additional evidence that would seem to implicate Taylor. However, Taylor passes a second lie detector test after Mrs. Cary is again assaulted and her savings are taken. Dan Mathews deduces that Henry and Wilbur Morgan must be involved and he sets a trap by asking Henry to take a lie detector test himself. Written by Sam Spear

Plot Summary | Add Synopsis


Action | Crime | Drama







Release Date:

23 January 1956 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:

Mono (Western Electric Recording)

Aspect Ratio:

1.33 : 1
See full technical specs »

Did You Know?


Jonathan Hole, who played motel guest Roger Taylor, prior to his death had a final TV role in Silhouette (1990) playing the role of "Man in Hotel". See more »


Matthews asks questions that require a relatively lengthy answer during the polygraph examination. Standard practice is to require an answer that is yes or no so the result is clear-cut and not ambiguous. See more »


[first lines]
Narrator: Many persons are convicted of crimes on the basis of a positive identification by another person. Law enforcement agencies rely heavily on this type evidence. Early on the morning of August tenth, Mrs. Ethel Carey, owner of a motel, went about her usual routine of starting another day, a day in which she would find it necessary to positively identify her first visitor.
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