The Secret of Polichinelle (1936 film)
The Secret of Polichinelle( French: Le secret de Polichinelle) is a 1936 French comedy film directed by André Berthomieu and starring Raimu, Françoise Rosay and André Alerme.
It is based on a play of the same name by Pierre Wolff, which had previously been turned into a silent film" The Secret of Polichinelle"( 1923).
The Secret of Mulan
The Secret of Mulan is the 1998 entry in the series of Secret of ... films released direct to video by UAV/ Sterling Entertainment Group, which generally were adaptations of popular theatrical animated films released in a given year, such as" The Secret of Anastasia" and" The Secret of the Hunchback".
This film, written by Katherine Lawrence and Christy Marx, is based on the poem about Hua Mulan, which had been made as a film by Walt Disney Pictures the same year as" Mulan", and combined with elements from another popular 1998 animated film," A Bug's Life".
The film is one of the early collaborations of the composer- lyricist team of Megan Cavallari and David Goldsmith, and some copies were released with a CD soundtrack attached to the back cover.
The Secret of Mountain Lake
The Secret of Mountain Lake is a 1954 Soviet adventure film directed by Aleksandr Rou.
Otto Hoffman
Otto F. Hoffman (May 2, 1879 – June 23, 1944) was an American film actor.
He appeared in 199 films between 1915 and 1944.
He was born in New York City and died in Los Angeles, California from lung cancer.
Hoffman's Broadway credits include "The Strange Woman" (1913), "The Spring Maid" (1910), and "A Broken Idol" (1909).
He was also active in stock theater productions.
Hoffman debuted in film in 1906 in a production of the Edison Company in New York.
Later he worked for Goldwyn Pictures.
The Secret of Rosette Lambert
The Secret of Rosette Lambert is a 1920 French film directed by Raymond Bernard.
The Secret of Black Mountain
The Secret of Black Mountain is a 1917 silent film western short directed by Otto Hoffman and starring Vola Vale.
An incomplete print is preserved in the Library of Congress collection.
The Secret of Blood
The Secret of Blood is a 1953 Czechoslovak drama film directed by Martin Frič.
The Secret of Two Oceans
The Secret of Two Oceans is a 1956 Soviet drama film directed by Konstantine Pipinashvili.
El secreto de la solterona
El secreto de la solterona( also known as The Secret of the Spinster or The Secret of the Old Maid) is a 1945 Mexican mystery romantic drama film directed and co-written by Miguel M. Delgado, based on an 1868 book of the same name by E. Marlitt.
The Secret of Bacchus
The Secret of Bacchus is a 1984 Romanian comedy film directed by Geo Saizescu.

Question: What is the cause of death of director of film The Secret Of Black Mountain?
Answer: lung cancer