Skip to main content
Marthe Keller
★ Acting

Marthe Keller

Born 1945 · Basel, Switzerland · Active 1948–2025

Born in 1945 in Basel, Switzerland, Marthe Keller has made a significant impact in cult cinema, particularly with her roles in Marathon Man (1976) and Fedora (1978). In Marathon Man, she portrays the enigmatic girlfriend of Dustin Hoffman, adding depth to the film's exploration of suspense and betrayal. Her performance in Fedora as a fading star reflects the darker aspects of fame and obsession, characteristic of the era's cinematic themes. Keller's transition from European theater to American film highlights her versatility and commitment to complex characters.

▶ Watch on SassyFlix 2 films available
Marathon Man

Marathon Man

1976 ★ 7.3
as Elsa Opel

Thomas 'Babe' Levy is a history Ph.D. student and an avid runner researching the same field as his father, H.V. Levy (Allen Joseph), who committed suicide after being investigated during the Joseph McCarthy era. Babe's brother, Henry 'Doc' Levy, poses as an oil company executive but is actually a government agent working for a secret agency headed by Commander Peter 'Janey' Janeway (William Devane). One of Doc's jobs is to serve as a diamond courier for the infamous Nazi war criminal Dr. Christian Szell, in return for the latter's assistance in tracking down other Nazi war criminals. Szell is known as der weiße Engel (German for The White Angel) due to his prominent mane of white hair. A wanted war criminal, Szell is ensconced in South America and is living off a large cache of diamonds which he had taken from Jews killed at Auschwitz. The diamonds are kept inside a safe deposit box at a bank in New York City and are withdrawn as needed by his brother Klaus Szell. After Dr. Szell's brother is killed in a fit of road rage, Szell feels that he can't trust anybody anymore and proceeds to try to have all of the diamond handlers and couriers murdered, including Doc himself. Escaping several murder attempts, Doc suspects that Szell will come to New York City to retrieve his valuable diamond collection. Doc comes to New York under the guise of a visit to Babe. Meanwhile, Babe and his new girlfriend, Elsa Opel, who claims to be from Switzerland, are mugged by two men dressed in suits. When Doc takes Babe and Elsa to lunch, he tricks Elsa into revealing that she has been lying to Babe about her background. Though Doc suspects she may be connected to Szell, he tells Babe that she is seeking an American husband so that she can become a U.S. citizen. After Szell arrives in America, Doc confronts him, stating that he shouldn't have involved Babe in these matters and that he himself is not to be trusted. Szell then takes Doc by surprise and stabs him with a blade concealed in his sleeve. Doc makes it back to Babe's apartment and dies. The police interrogate Babe until government agents, led by Janeway, arrive. Janeway asks Babe what Doc told him before he died, and tells Babe that his brother was a U.S. government agent. Babe insists that his brother did not tell him anything, but Janeway is convinced Doc would not have struggled all the way to Babe's apartment without giving him vital information. Babe is later abducted from his apartment by the two men who mugged him in the park, and he is tortured by Szell using dentistry. During his torture, Babe is repeatedly asked, "Is it safe?", but he continues to deny any knowledge. Babe is then rescued by Janeway, who explains that Szell is in the U.S. to sell off his large cache of diamonds. Janeway presses Babe about Doc's dying words, but Babe still insists he knows nothing. Frustrated, Janeway reveals himself as a double agent and returns Babe to Szell. Still unable to extract anything from Babe, Szell drills into one of his healthy teeth. Babe eventually escapes, aided by his skills as a marathon runner. Babe phones Elsa, who agrees to meet him with a car. Arriving at her country home, Babe guesses that Elsa has set him up, forcing her to confess that the home was owned by Szell's deceased brother. Janeway and Szell's men arrive, but Babe takes Elsa hostage. Babe kills Szell's men as they attempt to shoot him. Janeway offers to let Babe kill Szell in revenge for Doc's death, if Janeway can have the diamonds. Babe agrees, but as he leaves, Janeway fatally shoots Elsa in revenge for her spoiling the plan to trap Babe and kill him in the house. Babe hears the gunfire outside the house and shoots Janeway through the window, killing him. Attempting to determine the value of his diamonds, Szell visits an appraiser in the Diamond District in midtown Manhattan. A shop assistant who is a Holocaust survivor believes he recognizes Szell as a war criminal. After Szell hurriedly leaves the shop, an elderly Jewish woman also recognizes him. Trying to cross the street to get closer to Szell, the woman is hit by a taxi, causing a crowd to assemble to aid her. Amidst the confusion, the shop assistant appears again, directly confronting Szell, who slits the man's throat. Szell retrieves his diamonds but, as he attempts to leave, Babe forces him at gunpoint into a water-treatment facility 2 miles away in South Gate House, Central Park. Babe tells Szell he can keep as many diamonds as he can swallow. Szell initially refuses, and Babe begins throwing the diamonds into the water. Szell relents and swallows one diamond, but then refuses to cooperate further. Szell releases the catch on his sleeve blade and tells Babe that both Babe's brother and father were weak, suggesting that Babe's father was some sort of spy like Doc, and that Szell had been involved with Babe's father's death. Babe throws the rest of the diamonds down the steps towards the water; Szell dives for them, but stumbles, and falls on his own knife blade, his dead body falling over a railing and into the water. Babe heads out into Central Park, stopping to throw his gun into the reservoir. 

Watch Now
Career Highlights Top 6 by popularity · TMDB

Filmography

130 credits
2020s 12 credits
2025
The Amateur as Florist
Movie ★ 6.9
2025
The Deal as Maria Cassini
TV ★ 7.1
2023
Mars Express as Beryl (voice)
Movie ★ 7.4
2023
One Life as Betty Maxwell
Movie ★ 7.8
2023
Beau geste as Self
TV ★ 1.0
2022
Heidi's Alpine Dream as Johanna Spyri (voice)
Movie ★ 10.0
2022
Everybody Loves Jeanne as Claudia, mère de Jeanne
Movie ★ 6.2
2022
Marie Antoinette as The Empress
TV ★ 7.5
2021
Movie ★ 5.9
2021
Movie ★ 2.0
2020
Movie ★ 6.4
2020
Movie ★ 6.4
2010s 27 credits
2019
The Witness as Judge D'Amici
Movie ★ 7.0
2019
Movie ★ 5.7
2019
Movie ★ 4.8
2019
The Holy Family as La Mère
Movie ★ 4.0
2018
Movie
2018
The Escape as Anna
Movie ★ 5.5
2018
Breath of Life as Mathilde Chaykine
Movie ★ 6.3
2018
Unveiled as Isabelle
Movie ★ 5.8
2018
The Romanoffs as Anushka
TV ★ 6.4
2017
Movie ★ 6.6
2017
Movie ★ 7.3
2016
After Love as Christine
Movie ★ 6.1
2016
Miséricorde as Gloria
Movie ★ 5.6
2015
Amnesia as Martha Sagell
Movie ★ 5.4
2015
Movie
2014
Movie ★ 6.0
2013
Miserere as Laura Bernheim
Movie ★ 5.9
2012
In a Rush as Mina
Movie ★ 4.9
2011
Page Eight as Leona Chew
Movie ★ 6.6
2011
My Best Enemy as Hannah Kaufmann
Movie ★ 5.8
2011
The Giants as Rosa
Movie ★ 7.0
2011
Movie
2011
Jedermann Remixed as Buhlschaft (archive footage)
Movie
2010
Movie
2010
Hereafter as Dr. Rousseau
Movie ★ 6.1
2000s 18 credits
2009
Movie ★ 3.6
2008
Movie ★ 5.5
2008
Cortex as Carole Rothmann
Movie ★ 6.5
2008
Movie
2008
Modus Operandi as Narrator (voice)
Movie
2008
TV
2007
Chrysalis as Professeur Brügen
Movie ★ 5.3
2007
UV as Mother
Movie ★ 6.0
2007
Movie ★ 6.0
2007
TV ★ 7.5
2006
Fragile as Emma
Movie ★ 5.5
2005
TV ★ 4.0
2004
Nightsongs as Mutter
Movie ★ 5.0
2004
La Nourrice as Mme Dumayet-Ponti
Movie ★ 7.0
2003
Par amour as Nicole Doucet
Movie ★ 7.0
2002
Time of the Wolf as Rebecca McGregor
Movie ★ 7.4
2001
Tout va bien c'est Noël! as Jacqueline Bréaud
Movie ★ 9.0
1990s 16 credits
1999
From Behind as Christina
Movie ★ 5.1
1998
The School of Flesh as Madame Thorpe
Movie ★ 5.4
1997
Women as Barbara
Movie ★ 5.2
1997
K as Nora Winter
Movie ★ 6.0
1997
Movie ★ 8.0
1995
Pereira Declares as Mrs. Delgado
Movie ★ 6.7
1995
Tödliches Geld as Beatrice Belmont
Movie ★ 10.0
1995
Belle Époque as Antoinette
TV ★ 10.0
1994
Mon amie Max as Catherine Mercier
Movie ★ 5.7
1993
Movie ★ 8.0
1993
Movie ★ 10.0
1993
Movie ★ 7.0
1992
Turbulences as Hélène
Movie ★ 10.0
1992
À deux pas du paradis as Eva Grundberg
Movie ★ 7.0
1991
Lapse of Memory as Linda Farmer (Marie Carson)
Movie ★ 7.3
1991
TV ★ 5.9
1980s 17 credits
1989
Seven Minutes as Frau Wagner
Movie ★ 7.2
1989
The Nightmare Years as Tess Shirer
TV ★ 6.5
1988
Movie ★ 10.0
1988
La Ruelle au clair de lune as Nelly (Helma Schleyer)
Movie ★ 8.0
1987
Dark Eyes as Tina
Movie ★ 6.6
1987
The Hospice as Cecile
Movie ★ 7.0
1986
Movie ★ 7.0
1985
Joan Lui as Judy Johnson
Movie ★ 5.3
1985
Red Kiss as Bronka
Movie ★ 5.5
1984
Movie ★ 4.3
1983
Jedermann as Buhlschaft
Movie
1983
Movie ★ 7.0
1983
Wagner as Mathilde Wesendonck
TV ★ 6.8
1982
The Charterhouse of Parma as Gina Sanseverina
TV ★ 8.5
1982
TV ★ 6.8
1981
The Amateur as Elisabeth
Movie ★ 5.4
1980
Movie ★ 5.6
1970s 25 credits
1978
Fedora as Fedora
Movie ★ 6.7
1978
Movie
1977
Movie ★ 5.8
1977
Black Sunday as Dahlia
Movie ★ 6.7
1976
Marathon Man as Elsa Opel
Movie ★ 7.2
1976
Movie ★ 6.5
1975
Movie ★ 5.5
1975
Movie ★ 10.0
1974
Movie ★ 5.7
1974
And Now My Love as Sarah / Her Mother / Her Grandmother
Movie ★ 6.0
1974
TV ★ 9.5
1973
Fall of a Body as Marthe Renon
Movie ★ 5.7
1973
The Suburbs Are Everywhere as Marlène Réval
Movie ★ 5.0
1973
The Right of the Maddest as L'auto-stoppeuse
Movie ★ 6.4
1972
Movie ★ 5.9
1972
A Loser as Catherine
Movie ★ 5.3
1972
Movie
1972
La Demoiselle d'Avignon as Koba Lye-Lye (Princesse de Kurlande)
TV ★ 7.3
1972
TV ★ 8.0
1972
TV ★ 6.0
1971
Arsène Lupin as Natacha
TV ★ 7.8
1971
TV ★ 6.0
1970
Give Her the Moon as Marie Panneton
Movie ★ 5.7
1970
Tango as Aline
Movie ★ 8.0
1960s 12 credits
1969
The Devil by the Tail as Amélie, baronne de Coustines
Movie ★ 6.1
1969
Movie
1967
Movie ★ 7.5
1967
Pfeiffer as Marthe
Movie ★ 6.0
1966
Movie ★ 8.0
1966
Funeral in Berlin as Brigit (uncredited)
Movie ★ 6.4
1966
Kein Freibrief für Mord as Christine Foster
Movie
1965
Und nicht mehr Jessica as Jessica Lovell
Movie ★ 9.0
1965
Antiquitäten as Junge Frau
Movie
1965
Movie ★ 8.0
1964
Movie ★ 8.0
1964
Movie ★ 7.0
1950s 1 credit
1953
The Oscars as Self
TV ★ 7.0
1940s 1 credit
1948
Bambi as Self
TV ★ 9.0