Question: Which movie based on a novel by Mary Shelley was an inspiration for the look of the movie The Whisperer in Darkness?

Context paragraphs:
The Whisperer in Darkness (film): The Whisperer in Darkness is a 2011 independent film based on the H. P. Lovecraft short story of the same name, directed and produced by Sean Branney, Andrew Leman, and David Robertson and distributed by the H.P. Lovecraft Historical Society.  It was shot using Mythoscope, a blend of vintage and modern filming techniques intended to produce the look of a 1930s-era film.  According to the film's website, the filmmakers intended to capture the look of "classic horror films of the 1930s like "Dracula", "Frankenstein" and "King Kong"".

Midas (Shelley play): Midas is a verse drama in blank verse by the Romantic writers Mary Shelley and Percy Bysshe Shelley.  Mary wrote the drama and Percy contributed two lyric poems to it.  Written in 1820 while the Shelleys were living in Italy, Mary Shelley tried unsuccessfully to have the play published by children's magazines in England in the 1830s; however, it was not published until A. Koszul's 1922 scholarly edition.  Whether or not the drama was ever meant to be staged is a point of debate among scholars.  The play combines the stories of the musical contest between Apollo and Pan and that of King Midas and his ability to turn everything he touches to gold.

Frankenstein (1931 film): Frankenstein is a 1931 American pre-Code horror monster film from Universal Pictures directed by James Whale and adapted from the play by Peggy Webling (which in turn is based on the novel of the same name by Mary Shelley), about a scientist and his assistant who dig up corpses to build a man animated by electricity, but his assistant accidentally gives the creature an abnormal, murderer's brain.  The resultant monster is portrayed by Boris Karloff in the film.

History of a Six Weeks' Tour: History of a Six Weeks' Tour through a part of France, Switzerland, Germany, and Holland; with Letters Descriptive of a Sail Round the Lake of Geneva and of the Glaciers of Chamouni is a travel narrative by the English Romantic authors Mary Shelley and Percy Bysshe Shelley.  Published in 1817, it describes two trips taken by Mary, Percy, and Mary's stepsister, Claire Clairmont: one across Europe in 1814, and one to Lake Geneva in 1816.  Divided into three sections, the text consists of a journal, four letters, and Percy Shelley's poem "Mont Blanc".  Apart from the poem, the text was primarily written and organised by Mary Shelley.  In 1840 she revised the journal and the letters, republishing them in a collection of Percy Shelley's writings.

Mary Shelley's Frankenstein (film): Mary Shelley's Frankenstein is a 1994 horror drama film directed by Kenneth Branagh and starring Robert De Niro, Kenneth Branagh, Tom Hulce, Helena Bonham Carter, Ian Holm, John Cleese, and Aidan Quinn.  The picture was produced on a budget of $45 million and is considered the most faithful film adaptation of Mary Shelley's novel "Frankenstein; or, The Modern Prometheus", despite several differences and additions in plot from the novel.

Rambles in Germany and Italy: Rambles in Germany and Italy, in 1840, 1842, and 1843 is a travel narrative by the British Romantic author Mary Shelley.  Issued in 1844, it is her last published work.  Published in two volumes, the text describes two European trips that Mary Shelley took with her son, Percy Florence Shelley, and several of his university friends.  Mary Shelley had lived in Italy with her husband, Percy Bysshe Shelley, between 1818 and 1823.  For her, Italy was associated with both joy and grief: she had written much while there but she had also lost her husband and two of her children.  Thus, although she was anxious to return, the trip was tinged with sorrow.  Shelley describes her journey as a pilgrimage, which will help cure her depression.

Mary Shelley (film): Mary Shelley (originally titled A Storm In the Stars) is a 2017 Irish-American romance film directed by Haifaa al-Mansour and written by Emma Jensen.  It is about writer Mary Shelley's first love and romantic relationship with poet Percy Bysshe Shelley, which inspired Mary to write "Frankenstein".  The film stars Elle Fanning, Maisie Williams, Douglas Booth, Bel Powley, and Ben Hardy.

Gothic (film): Gothic is a 1986 British horror film directed by Ken Russell, starring Gabriel Byrne as Lord Byron, Julian Sands as Percy Bysshe Shelley, Natasha Richardson as Mary Shelley, Myriam Cyr as Claire Clairmont (Mary Shelley's stepsister) and Timothy Spall as Dr. John William Polidori.  It features a soundtrack by Thomas Dolby, and marks Richardson's film debut.

Life Without Soul: Life Without Soul (1915) is a lost horror film, directed by Joseph W. Smiley and written by Jesse J. Goldburg.  This film is an adaptation of Mary Shelley's Gothic novel "Frankenstein".  The film is about a doctor who creates a soulless man.  In the end, it turns out that a young man has dreamed the events of the film after falling asleep reading Mary Shelley's novel.

List of works by Mary Shelley: This is a list of works by Mary Shelley (30 August 1797 – 1 February 1851), the British novelist, short story writer, dramatist, essayist, biographer, and travel writer, best known for her Gothic novel "Frankenstein: or, The Modern Prometheus" (1818).  She also edited and promoted the works of her husband, the Romantic poet and philosopher Percy Bysshe Shelley.  Until the 1970s, Mary Shelley was known mainly for her efforts to publish Percy Shelley's works and for "Frankenstein".  Recent scholarship has yielded a more comprehensive view of Mary Shelley’s achievements, however.  Scholars have shown increasing interest in her literary output, particularly in her novels, which include the historical novels "Valperga" (1823) and "Perkin Warbeck" (1830), the apocalyptic novel "The Last Man" (1826), and her final two novels, "Lodore" (1835) and "Falkner" (1837).  Studies of her lesser-known works such as the travel book "Rambles in Germany and Italy" (1844) and the biographical articles for Dionysius Lardner's "Cabinet Cyclopaedia" (1829–46) support the growing view that Mary Shelley remained a political radical throughout her life.  Mary Shelley's works often argue that cooperation and sympathy, particularly as practised by women in the family, were the ways to reform civil society.  This view was a direct challenge to the individualistic Romantic ethos promoted by Percy Shelley and Enlightenment political theories.

Supporting paragraphs: The Whisperer in Darkness (film) Frankenstein (1931 film)
Answer: Frankenstein