8 user 3 critic

The Energy Eater 

Carl realizes that Matchemonedo, a monstrous restless bear-like spirit, is eating up the structure of a new hospital built over its resting place and draining patients of their protein. He asks Native American Jim Elkhorn for help.


Alexander Grasshoff (as Alex Grasshoff)


Jeffrey Grant Rice (created by) (as Jeff Rice), Arthur Rowe (teleplay) | 2 more credits »

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Episode cast overview, first billed only:
Darren McGavin ... Carl Kolchak
Simon Oakland ... Tony Vincenzo
William Smith ... Jim Elkhorn
Elaine Giftos ... Nurse Janis Eisen
Tom Drake ... Don Kibbey
Michael Strong ... Walter Green
Robert Yuro Robert Yuro ... Detective Webster
Joyce Jillson ... Diana Lanier
Jack Grinnage ... Ron Updyke
Ruth McDevitt ... Emily Cowles
John Alvin ... Dr. Carrie
Robert Cornthwaite ... Dr. Hartfield
Michael Fox ... Frank Wesley
Melissa Greene Melissa Greene ... 1st Girl
Dianne Harper Dianne Harper ... 2nd Girl


Kolchak faces another Native American monster, this one known as the Matchemonedo, when he learns of a series of mishaps taking place in a newly opened hospital. The construction of the hospital has awakened Matchemonedo, an invisible manifestation that causes ruptures in the building's constitution, electrical outbursts, and deaths that are seemingly caused by electrocution. Kolchak enlists the help of a reluctant Indian shaman to combat the rampaging force. Written by acidxian

Plot Summary | Add Synopsis







Release Date:

13 December 1974 (USA) See more »

Company Credits

Show more on IMDbPro »

Technical Specs


Sound Mix:




Aspect Ratio:

1.33 : 1
See full technical specs »

Did You Know?


Kolchak and Jim Elkhorn are doing research on Matchemonedo, The Energy Eater entity, and are reading diaries and logs of pioneers who encountered or mentioned the entity. Elkhorn fluently reads and translates from a French passage written by a French priest who refers to it. William Smith, who played Jim Elkhorn, is fluent in Russian, French, German , and Serbo-Croatian, as well as English. He learned foreign languages while serving as an Intelligence specialist for the U.S. Air Force during the Korean War. See more »


The boom mic is visible when Kolchak brings an architect to the hospital to inspect it's lower levels. See more »


Jim Elkhorn: What do you mean, 'we,' white man?
See more »


Edited into Crackle of Death (1974) See more »

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User Reviews

15 September 2017 | by bkoganbingSee all my reviews

I really didn't get this Nightstalker episode at all. It's told by Darren McGavin in flashback when he is convalescing in the hospital.

The scene of a lot of mysterious happenings including a pair of deaths of construction workers while it was being built is another, a real state of the art place. This hospital was supposed to be Chicago's answer to the Cleveland or the Mayo Clinic. But people still keep dying there who really aren't supposed to.

It supposedly is an old Indian spirit named Matchemonedo and the place is under his burial ground. He drains protein and energy from the living and all that spanking new electrical equipment it's like having a nine year old with an unlimited charge account at a candy store.

Darren McGavin has an interesting consultant on this case, it's William Smith who was foreman of the Indians who worked the job at the heights. He's a man of many gifts. He deserved a television series of his own.

Smith was wasted on this story. It's too loosely constructed and I was never sure exactly how this creature operated.

Far from the best of this series.

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