Perry Mason (1957–1966)
6 user

The Case of the Grinning Gorilla 

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Perry helps Josephine Kempton after Della buys the diary of a girl who committed suicide. Her ex-boss has been telling people she is a thief so she sued. Perry has to rescue her from a gorilla trapping her with her dead boss.


Jesse Hibbs


Erle Stanley Gardner (story), Jackson Gillis (teleplay)


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Episode cast overview, first billed only:
Raymond Burr ... Perry Mason
Barbara Hale ... Della Street
William Hopper ... Paul Drake
Ray Collins ... Police Lt. Arthur Tragg (credit only)
Victor Buono ... Nathon Fallon
Charlene Holt ... Helen Cadmus
Robert Colbert ... Asst. District Attorney F.A. Snell
Lurene Tuttle ... Josephine Kempton
Gavin MacLeod ... Mortimer Hershey (as Gavin Mac Leod)
Bartlett Robinson ... Sydney Hardwick
Harvey Stephens ... Benjamin Addicks
Robert Foulk ... Deputy Sergeant
Jim Boles Jim Boles ... Estate Guard
Tommy Farrell ... Jefferson
Janos Prohaska ... Gorilla


After Della Street buys a package of memorabilia dealing with a woman, Helen Cadmus, who died a year ago, she and Perry are approached by Nathon Fallon who, it seems, is prepared to pay any price to get his hands on the material on behalf of his employer, Benjamin Addicks. Perry is intrigued and asks Paul Drake to look into Addicks' background. They soon track down a former housekeeper, Josephine Kempton, who is in the process of suing Addicks for slander as he has been spreading lies about her being a thief. Addicks is a strange man, a scientist who keeps a menagerie of animals including a gorilla. When Josephine calls Perry from Addicks' home asking for help, he arrives to find the gorilla in Addick's bedroom and Josephine on the floor avoiding the glare of the gorilla, who has seemingly gotten out of its enclosure. Addicks is dead but, when the police find that he has been stabbed, it's clear that someone other than the gorilla was involved. Written by garykmcd

Plot Summary | Add Synopsis


Crime | Drama | Mystery







Release Date:

29 April 1965 (USA) See more »

Company Credits

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Technical Specs


Sound Mix:


Aspect Ratio:

1.33 : 1
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Did You Know?


In rare form, Perry is shown in the opening shot and scene. See more »


In Perry's initial conversation with Mortimer Hershey, his glasses are a light colored frame and no lenses. The next scene his glasses have a darker frame with lenses. In the following scene the glasses switch back to the lighter color frame without lenses. See more »


[first lines]
Della Street: [hurrying down a hall with a package in her arms] Perry... here I am.
Perry Mason: Did you have a chance to call the office?
Della Street: Well, I was just going to, but...
Perry Mason: We have to be up in 212 in less than five minutes.
Della Street: Yes, I know. If you'll just hold this, it will only take me a minute to call Gertie.
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User Reviews

I liked this more then I should have.
4 February 2015 | by RichN36See all my reviews

I liked this more then I should have. Mainly the reason was it was a little more of a humorous turn. I agree with the other comments it was a little harder to follow and some unexpected twist and turns along the journey but that was what made it so fun at least for me. But the best surprise was seeing two of my favorite character actors in one episode Victor Burno and Gavin McCloud.

The other reviewers gave a good summery of the story plot and I wouldn't be able to add much more to what they already said.

One thing came out of this episode a new quest this summer while walking around Garage Sales and Flea Markets I want to find "Case of the Grinning Gorilla" the original Book.

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