Title: The Writing on the Wall (film)
Content:  The writer of the scenario was Lloyd Lonergan. Lonergan was an experienced newspaperman still employed by The New York Evening World while writing scripts for the Thanhouser productions. He was the most important script writer for Thanhouser, averaging 200 scripts a year from 1910 to 1915. The film director was Barry O'Neil, the stage name of Thomas J. McCarthy. O'Neil would direct many important Thanhouser pictures, including its first two-reeler, Romeo and Juliet. Film historian Q. David Bowers does not attribute a cameraman for this production, but two possible candidates exist. Blair Smith was the first cameraman of the Thanhouser company, but he was soon joined by Carl Louis Gregory who had years of experience as a still and motion picture photographer. The role of the cameraman was uncredited in 1910 productions. The cast for 
Title: Young Lord Stanley
Content:  The script for the production was written by Lloyd Lonergan, an experienced newspaperman employed by The New York Evening World while writing scripts for the Thanhouser productions. The film director is unknown, but it may have been Barry O'Neil. Film historian Q. David Bowers does not attribute a cameraman for this production, but at least two possible candidates exist. Blair Smith was the first cameraman of the Thanhouser company, but he was soon joined by Carl Louis Gregory who had years of experience as a still and motion picture photographer. The role of the cameraman was uncredited in 1910 productions. The other 
Title: Screenwriting
Content:  ; Seven Psychopaths (2012)&mdash;In this satire, written and directed by Martin McDonagh, Colin Farrell plays a screenwriter who is struggling to finish his screenplay Seven Psychopaths, but finds unlikely inspiration after his best friend steals a Shih Tzu owned by a vicious gangster. ; Trumbo (2015)&mdash;Highly successful Hollywood screenwriter Dalton Trumbo, played in this biopic by Bryan Cranston, is targeted by the House Un-American Activities Committee for his socialist views, sent to federal prison for refusing to cooperate, and blacklisted from working in Hollywood, yet continues to write and subsequently wins two Academy Awards while using pseudonyms. Screenwriting has been the focus of a number of films: 
Title: Dennis Lehane
Content:  that Lehane would be joining the writing staff of HBO's Boardwalk Empire as a writer and a creative consultant. He will consult with showrunner Terence Winter on the outline of the fourth season of the show, and he confirmed that he would write at least one episode. Lehane wrote his first film screenplay, The Drop, as an adaptation of his short story "Animal Rescue". The film starred Tom Hardy, Noomi Rapace, and James Gandolfini (in his final film performance). Released September 12, 2014, the movie received positive reviews, particularly for its "smartly written script." In 2013 Lehane was contracted to write a screenplay, Silk Road, about the online black market. That same year attached to adapt the script for the remake of the critically acclaimed French film A Prophet, a prison drama.
Title: She's Done it Again
Content:  The scenario was written by Lloyd F. Lonergan. Lonergan was the writer of both of the previous productions, The Actor's Children and St. Elmo. This release marked the first comedy release of a scenario written by Lonergan and also the first comedy produced by the Thanhouser company. Lonergan was an experienced newspaperman still employed by The New York Evening World while writing scripts for the Thanhouser productions. He was the most important script writer for Thanhouser, averaging 200 scripts a year from 1910 to 1915. Film historian Q. David Bowers attributes the director of the production to Lloyd B. Carleton, the stage name of Carleton B. Little. 
Title: Leo Gordon
Content:  Gordon was also a prolific screenwriter and novelist. Usually credited as "Leo V. Gordon", he wrote dozens of scripts for television series and movies, sometimes writing a good role for himself. His first successful film script, The Cry Baby Killer, featured a young and unknown Jack Nicholson. Among the more notable feature films he wrote was You Can't Win 'Em All (1970) starring Tony Curtis and Charles Bronson. He also wrote the screenplay and appeared in Tobruk (1967), which starred Rock Hudson and George Peppard and was directed by Arthur Hiller. As a television screenwriter he wrote nearly 50 scripts apiece for Bonanza, Cheyenne and Maverick, in the 
Title: The Founder
Content:  The screenplay for The Founder was written by Robert Siegel, based on Ray Kroc's autobiography, and on an unauthorized biography. According to early reports, the film was to be developed in the same vein as There Will Be Blood and The Social Network. According to Deadline Hollywood, it was ranked the 13th best unproduced script of 2014. In December 2014, John Lee Hancock was signed to direct the picture.
Title: Lloyd Lonergan
Content:  Lloyd Lonergan (March 3, 1870, Chicago, Illinois - April 6, 1937, New York City) was one of the most prolific scenario and screenwriters in American silent film. A brother-in-law of Edwin Thanhouser he worked for the Thanhouser Company based in New Rochelle, New York, writing screenplays for over 100 films. His career was at its peak in the earlier short film era particularly in 1912 when Lonergan wrote the scripts for an astonishing 50 films. His sister Elizabeth Lonergan and brother Philip Lonergan were also a notable screenwriters, and his mother Ellen Mahoney Lonergan was a newspaper society editor.
Title: The Little Fire Chief
Content:  The writer of the scenario is unknown, but it was most likely Lloyd Lonergan. He was an experienced newspaperman employed by The New York Evening World while writing scripts for the Thanhouser productions. The film director is unknown, but it may have been Barry O'Neil or Lucius J. Henderson. Cameramen employed by the company during this era included Blair Smith, Carl Louis Gregory, and Alfred H. Moses, Jr. though none are specifically credited. The role of the cameraman was uncredited in 1910 productions. The cast credits for this production are fragmentary like many 1910 Thanhouser productions. In late 1910, the Thanhouser company released a list of the important personalities in their films. The list includes G.W. Abbe, Justus D. Barnes, Frank H. Crane, Irene Crane, Marie Eline, Violet Heming, Martin J. Faust, Thomas Fortune, George Middleton, Grace Moore, John W. Noble, Anna Rosemond, 
Title: Leon of the Table D'hote
Content:  The writer of the scenario is unknown, but it was most likely Lloyd Lonergan. He was an experienced newspaperman employed by The New York Evening World while writing scripts for the Thanhouser productions. The film director is unknown, but it may have been Barry O'Neil. Film historian Q. David Bowers does not attribute a cameraman for this production, but at least two possible candidates exist. Blair Smith was the first cameraman of the Thanhouser company, but he was soon joined by Carl Louis Gregory who had years of experience as a still and motion picture photographer. The role of the cameraman was uncredited in 1910 productions. The cast credits are unknown, but many 1910 Thanhouser productions are fragmentary. In late 1910, the Thanhouser company released a list of the important personalities in their films. The list includes G.W. Abbe, Justus D. Barnes, Frank H. Crane, Irene Crane, Marie Eline, Violet Heming, Martin J. Faust, Thomas Fortune, George Middleton, Grace Moore, John W. Noble, Anna Rosemond, Mrs. George Walters.

Question: Who was the screenwriter for Léon: The Professional?
Answer: Luc Besson.
Luc Paul Maurice Besson.