Question: Which novel written by Margaret Seymour Carpenter was produced as a film starring Hedy Lamarr?

Context paragraphs:
The Strange Woman: The Strange Woman is a 1946 American drama film noir thriller film directed by Edgar G. Ulmer starring Hedy Lamarr, George Sanders and Louis Hayward.  Originally released by United Artists, the film is now in the public domain.

H. M. Pulham, Esq.: H. M. Pulham, Esq. is a 1941 American drama film directed by King Vidor and starring Hedy Lamarr, Robert Young, and Ruth Hussey.  Based on the novel "H. M. Pulham, Esq." by John P. Marquand, the film is about a middle-aged businessman who has lived a conservative life according to the routine conventions of society, but who still remembers the beautiful young woman who once brought him out of his shell.  Vidor co-wrote the screenplay with his wife, Elizabeth Hill Vidor.  The film features an early uncredited appearance by Ava Gardner.

Ecstasy (film): Ecstasy (, French: "Extase" , German: "Ekstase" ) is a 1933 Czech-Austrian romantic drama film directed by Gustav Machatý and starring Hedy Lamarr (then Hedy Kiesler), Aribert Mog, and Zvonimir Rogoz.

White Cargo: White Cargo (1942) is a film starring Hedy Lamarr and Walter Pidgeon and released by Metro-Goldwyn-Mayer.  It is based on the 1923 London and Broadway hit play by Leon Gordon, which was in turn adapted from the novel "Hell's Playground" by Ida Vera Simonton.  The play had already been made into a British part-talkie, also titled "White Cargo", with Maurice Evans in 1929.  The 1942 film, unlike the play, begins in what was then the present day, and uses a flashback technique.

Hedy Lamarr: Hedy Lamarr ( ; born Hedwig Eva Maria Kiesler, November 9, 1914 January 19, 2000) was an Austrian and American film actress and inventor.

Margaret Seymour Carpenter: Margaret Seymour Carpenter, born April 3, 1893, died March 30, 1987 at Boston, Massachusetts, was the author of the novel "Experiment Perilous" (Boston: Little Brown & Co., 1943), a New York Times Bestseller in 1943.  The novel was subsequently produced by RKO Radio Pictures as a film of the same name, Experiment Perilous, starring Hedy Lamarr, George Brent, and Paul Lukas.  She was a daughter of George Rice Carpenter and his wife Mary Seymour.  She married on May 2, 1916, in New York City to Henry Barber Richardson of Boston, Massachusetts.

Her Highness and the Bellboy: Her Highness and the Bellboy is a 1945 American romantic comedy film directed by Richard Thorpe and starring Hedy Lamarr, Robert Walker, and June Allyson.  Written by Richard Connell and Gladys Lehman, the film is about a beautiful European princess who travels to New York City to find the newspaper columnist she fell in love with six years earlier.  At her posh New York hotel, she is mistaken for a maid by a kind-hearted bellboy.  Charmed by his confusion, the princess insists that he become her personal attendant, unaware that he has fallen in love with her.  "Her Highness and the Bellboy" was released by MGM in the United States on July 11, 1945.

Let's Live a Little: Let's Live a Little is a 1948 American romantic comedy film directed by Richard Wallace and starring Hedy Lamarr and Robert Cummings.  Written by Howard Irving Young, Edmund L. Hartmann, Albert J. Cohen, and Jack Harvey, the film is about an overworked advertising executive who is being pursued romantically by his former fiancée, a successful perfume magnate, who is also the ad agency's largest client.  While visiting a new client—a psychiatrist and author—to discuss a proposed ad campaign, his life becomes further complicated when the new client turns out to be a beautiful woman, who decides to treat his nervous condition.

Dishonored Lady: Dishonored Lady is a 1947 film noir crime film directed by Robert Stevenson and starring Hedy Lamarr, Dennis O'Keefe, and John Loder.  It is based on the 1930 play "Dishonored Lady" by Edward Sheldon and Margaret Ayer Barnes.  The film is also known as Sins of Madeleine.

A Lady Without Passport: A Lady Without Passport is a 1950 American film noir film directed by Joseph H. Lewis and starring Hedy Lamarr and John Hodiak.  Written by Howard Dimsdale, the film is about a beautiful concentration-camp refugee who has taken up residence in Cuba while awaiting permission to enter the United States.  An undercover immigration agent decides to use her as an informant to entrap the leader of an alien-smuggling ring.

Supporting paragraphs: Margaret Seymour Carpenter Hedy Lamarr
Answer: "Experiment Perilous"