A physician on death row for a mercy killing is allowed to experiment on a serum using a criminals' blood, but secretly tests it on himself. He gets a pardon, but finds out he's become a Jekyll-&-Hyde.

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Cast

Complete credited cast:
...
...
...
Edward Van Sloan ...
Ben Taggart ...
Pedro de Cordoba ...
Wright Kramer ...
Bertram Marburgh ...
...
Robert Fiske ...
Kenneth MacDonald ...
Frank Richards ...
Otto Kron - Convict
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Storyline

A physician on death row for a mercy killing is allowed to experiment on a serum using a criminals' blood, but secretly tests it on himself. He gets a pardon, but finds out he's become a Jekyll-&-Hyde.

Plot Summary | Add Synopsis

Taglines:

Beware! When Karloff stops the clock, your hour has come! See more »

Genres:

Crime | Horror | Sci-Fi

Certificate:

Unrated | See all certifications »
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Details

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Release Date:

17 September 1940 (USA)  »

Also Known As:

El mago de la muerte  »

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Technical Specs

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Sound Mix:

(Western Electric Mirrophonic Recording)

Aspect Ratio:

1.37 : 1
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Did You Know?

Trivia

Shooting lasted from June 27-July 12, 1940, released September 17. See more »

Quotes

Dr. John Garth: Well, you want to go on living, don't you?
Victor Sondini: Why, I've had a very full life, I... After all, man's span of life is only supposed to be threescore and ten.
Dr. John Garth: Who made that rule? George, your old age is a disease, and I can cure it!
See more »

Connections

Featured in The Lady with the Torch (1999) See more »

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User Reviews

 
BORIS KARLOFF WAS A MERCY KILLER!
7 April 2003 | by (United States) – See all my reviews

I viewed this film many years ago, and have not seen it for a long time. I was surprised to see Evelyn Keyes as co-star with Boris Karloff, playing his daughter. It is hard to believe that Evelyn Keyes had just finished working in "Gone With The Wind" in 1939 and then in 1940 played a minor role with Karloff in a low budget "B" movie. Karloff becomes a Mercy Killer and then is injected with a murder's blood and starts killing all his old friends. It appears that Karloff does not know just what he wants to do in this picture, help people become younger and live longer, or prevent them from suffering, or just plain kill them. You have to be a Boris Karloff fan to enjoy this film classic.


5 of 7 people found this review helpful.  Was this review helpful to you?

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