Bouleversant témoignage sur les horreurs de la guerre censuré jusqu’en 1980, Que la lumière soit est aujourd’hui considéré comme l’un des meilleurs films jamais réalisés sur les conséquences psychologiques de la guerre.
The story begins near the end of World War II in Europe. A soldier, suffering from amnesia, is on a hospital ship being helped by Major Williams, a medical doctor. The soldier was the only one of four infantrymen to survive when Nazi dive-bombers destroyed the farm house they were fighting the Germans from. The soldier and the U.S. Army do not know who he is. This is because when the four men's dog tags were found afterwards, they had been blown off their bodies, and the Army does not know which of the four the surviving soldier is.
In June 1944, Air Commodore Paul Collyer (Farrar) crash lands his plane on return from a reconnaissance mission. He appears to be suffering from amnesia and is unable to pass on the vital information he learned from the mission. The surgeon diagnoses no actual injury to the brain, but states that the memory loss is most likely attributable to shock, and in such cases memory is most often recovered through some mental jolt from the past. Moira Barrett (Campbell) is summoned to his bedside; he seems to recognise her, and his mind starts to go into flashback mode.
In Zorro's Black Whip the word Zorro never occurs, but a female who behaves like Don Diego in Idaho fights a cabal of corrupt politicians as "The Black Whip" after her brother (the original Black Whip) is killed.
A fugitive from the law (Curtis) becomes the victim of several double-crosses, eventually finding refuge with a blind girl (Jean) and her father (Craven) at a secluded farmhouse.
During the Great Depression, a man (Warner Baxter) is thrown out of a speeding car. When he regains consciousness in a hospital, he has amnesia. He is visited by a man who accuses him of faking his condition. The stranger calls the patient Phil and demands to know what happened to a valise, then runs away when Phil summons a nurse for help. When the man recovers, he takes the name Robert Ordway, after a hospital benefactor.
"John Smith" (Ronald Colman) is a British officer who was gassed and became shell shocked in the trenches during the First World War. He is confined to an asylum as an unidentified inmate because he has lost his memory and has trouble speaking. When the war ends, jubilation erupts in the nearby town of Melbridge and the gatekeepers abandon their posts to join the celebration. With no one to stop him, Smith simply wanders off.
In 1935, French Diplomat David Talbot (William Powell) and his bride Lucienne (Hedy Lamarr) are enjoying their third month of marriage in Paris when Talbot is confronted by extortionist Carlos Le Duc (Vladimir Sokoloff) who demands money in exchange for not turning him in to the police.
The film commences in 1890 in the small town of Kings Row, focusing on five children. They are Parris Mitchell, who lives with his grandmother; Cassandra Tower, daughter of Dr. Alexander Tower; the wealthy orphan Drake McHugh; Louise Gordon, daughter of the sadistic town physician Dr. Henry Gordon, who has been known to perform operations without anesthetic; and the tomboy Randy Monaghan, whose father is a railroad worker.
Fickle Juliet Marsden (Shirley Ross) breaks off her engagement to Lucius Lorimer (Jerome Cowan) for the third time to marry handsome singer and ladykiller Rodney Trask (Dennis Morgan). After the wedding, Juliet's Southern cousin, Laura Anders (Jane Wyatt), calls from South Carolina to apologize for not attending because of appendicitis. Juliet promises to visit Laura on her honeymoon and has Rodney write down the address. Before the newlyweds can leave, Rodney is visited by a woman named Clara Raymond, who blackmails him over their past relationship. Juliet's friend, Betty Trent (Lee Patrick), sees them drive away in Rodney's car. Rodney refuses to pay and is hit over the head by Clara's accomplice, developing amnesia. The blackmailers drive the car over a cliff, where it bursts into flames, and although no body is found, Rodney is believed to be dead. Rodney, not knowing who he is, takes the name "Happy Homes" from an F.H.A. billboard he chances to see, finds Laura's address in his pocket, and travels to her cotton plantation in search of his true identity. Laura has no idea who he is, but Rodney talks her into hiring him to run the nearly bankrupt plantation.
The action starts in 1918, with the collapse of the Tomainian (German) army. A Jewish barber saves the life of a wounded pilot, Schultz, but loses his own memory through concussion.
While on a cruise, stodgy, overly-frugal businessman Larry Wilson (William Powell) gets hit on the head with an oar while rescuing 'Doc' Ryan (Frank McHugh). He wakes up and remembers that he is actually a suave conman named George Carey; Doc is one of his crooked associates. However, he has lost all memory of the past nine years as Larry.
Don Diego Vega (Tyrone Power) is urgently called home by his father. To all outward appearances, he is the foppish son of wealthy ranchero and former Alcade Don Alejandro Vega (Montagu Love), having returned to California after his military education in Spain. Don Diego is horrified at the way the common people are mistreated by the corrupt Alcalde, Luis Quintero (J. Edward Bromberg), who had forced his father from the position. Don Diego then adopts the guise of El Zorro ("The Fox"), a masked outlaw, who becomes the defender of the common people and a champion for justice. Meanwhile, he romances the Alcalde's beautiful and innocent niece, Lolita (Linda Darnell), whom he grows to love. As part of his plan, Don Diego simultaneously flirts with the Alcalde's wife Inez (Gale Sondergaard), filling her head with tales of Madrid fashion and culture and raising her desire to move there with her corrupt husband. In both his guises, Don Diego must contend with the governor's ablest henchman, the malevolent Captain Esteban Pasquale (Basil Rathbone). He eventually dispatches the Captain in a fast-moving rapier duel-to-the-death, forcing a regime change, Don Diego's plan all along.