A man is found murdered, with witnesses convinced about the woman they saw leaving his apartment. However, it becomes apparent that the woman has a twin, and finding out which one is the killer seems impossible.

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Nominated for 1 Oscar. See more awards »
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Cast

Complete credited cast:
...
...
Dr. Scott Elliott
...
Lt. Stevenson
...
Rusty
Charles Evans ...
Dist. Atty. Girard
Garry Owen ...
Franklin (as Gary Owen)
Lela Bliss ...
Mrs. Didriksen
Lester Allen ...
George Benson
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Storyline

A woman suspected of murdering her doctor boyfriend has an identical twin sister. When both twins have an alibi for the night of the murder, a psychiatrist is called in to assist a detective in solving the case. Through a series of tests, he discovers which twin actually committed the crime and in the course of his investigation he falls in love with the normal twin. Written by Neil Doyle <Doylenf@msn.com>

Plot Summary | Plot Synopsis

Taglines:

Twins! One who loves... and one who loves to kill! See more »


Certificate:

Approved | See all certifications »

Parents Guide:

 »
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Details

Country:

Language:

Release Date:

18 October 1946 (USA)  »

Also Known As:

Der schwarze Spiegel  »

Company Credits

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Technical Specs

Runtime:

Sound Mix:

(Western Electric Recording)

Aspect Ratio:

1.37 : 1
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Did You Know?

Trivia

"The Screen Guild Theater" broadcast a 30 minute radio adaptation of the movie on February 2, 1948 with Lew Ayres reprising his film role. See more »

Goofs

The daytime overhead general shot of the police car arriving at the Medical Building with the witnesses gives the pedestrians opposite shadows to those of the vehicles. In the following mid shots the direction of light has changed again. See more »

Quotes

Dr. Scott Elliott: Not even nature can duplicate character, not even in twins.
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Connections

Referenced in Final Analysis (1992) See more »

Soundtracks

Frankie & Johnny
Music by Hughie Cannon (uncredited)
Played on the cigarette music-box in the Collins sisters' apartment
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User Reviews

 
In the Freudian vein.
27 November 2004 | by See all my reviews

Those were the days.Every director had his Freudian movie during the glorious forties:Hitchcock had " spellbound",Lang "secret beyond the door" Tourneur "cat people".... and Siodmak "the dark mirror".and it stood the test of time quite well ,almost as much as the three works I mention above.Of course ,the film owes a lot to Olivia de Havilland's sensational rendition,well half a century before Jeremy Irons' "dead ringers" or Keaton's "multiplicity".We run the whole gamut, as Siodmak brought out all his equipment :inkblood test, lie detector,mirror,and the whole kit.But De Havilland's charisma -at a time when actresses mastered their audience-survives and remains intact.We often feel ill-at-ease when we do not know who we're watching anymore(she plays twin sisters who are suspects in a criminal affair).De Havilland was perfect when it came to portraying ambiguous women (see also "My cousin Rachel")

Robert Siodmak had an eventful career:after his debut in Germany,he made some works in France ("Pièges" (1939) is the best and deserves to be watched)then came to America where he made remarkable thrillers ("the spiral staircase";"the killers").His career ended in Europa with interesting -but difficult to see- movies about Nazism ,but the only one of those late movies we can see now is "Katia" (1959),pure schmaltz


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