"Katharina Knie" is a 1929 German silent drama film directed by Karl Grune and starring Eugen Klöpfer, Carmen Boni and Adele Sandrock. It is based on the 1928 play of the same title by Carl Zuckmayer.

Post-war Germany 1945: Two rival gangs of uprooted boys fight each other in the ruins of Berlin, whose business is the black market out of necessity in order to survive. Their respective leaders are Gerhard and Dietrich. A pretty young circus artist named Corona comes to the destroyed city with a traveling circus. She immediately caught the boys' attention. When the latter notice that the circus director is abusing the girl, the two gangs join forces and plot an act of revenge against the tyrant. But with the hustle and bustle caused by this, Corona falls from the trapeze and is seriously injured. When the circus moves on, the boys organize a doctor for the sick artist who has been left behind. Their collectively concern for the blonde beauty makes them forget their enmity. This welds the troops closer together and sets the course for a common, meaningful future.

Malcolm McGregor joins the circus and falls in love with Olive Borden but his life changes when he finds out he is a titled Lord.

A naive young man witnesses an escalation of violence in his small hometown following the arrival of a mysterious circus attraction.

A circus performer falls in love with the son of a plantation owner in antebellum New Orleans. When the young man's stepmother objects to the wedding, the couple break apart and go their separate ways for a time. Also in the mix are two circus comics who feud over the heart of another Southern belle.

Drama set around a circus at Blackpool. A clown loves a young housekeeper and saves her from a fire caused by a jealous lion tamer.

After Clown Teddy lost his son, he lost his gift for laughter. He opened a joke shop and lives above the shop. His landlady has had a foster son since birth, and Teddy decides to raise the child, who always believed that Teddy was his father. When the mother suddenly appears five years later and wants her son, Teddy decides to run away with the child and goes back onstage with his son. Will the family catch up with them, or will the mother never get her son back?

Govindan Kutty (Raghu) is a clown who works in the circus. He comes to his village looking for a bride. Sharada (Anjali Naidu) is impressed by his charms and seemingly rich lifestyle and agrees to marry him. When they reach back the circus after getting married, things however change considerably. Govindan is an insignificant figure there and is frequently ignored by everyone else. The frustrated Sharada meets a stuntman Vijayan (Mammootty) and gets close to him much to the discomfort of Govindan.

Raju faces many hurdles and disappointments in matters of the heart throughout his life. But as a clown in a circus, he tries to make his audience laugh at the cost of his own sorrows. Along the way, Raju loves and loses, but must always keep a smile on his face because, in the words of his circus manager, "The show must go on."

The story of Danny, a girl with Asperger's Syndrome, and Pete a circus performer. Pete enters Danny's life as a catalyst for transformation. With a Black and white selective vision, Danny fights the over protection of her mother, encouraged by the new feelings that this new character has provoke in her. Using Pete as an excuse Danny screams to her mother: 'Let Me Walk My Life', and by doing so, she manages to shift her own perception just enough, to be able to perceive some color to her life.

A child is born. We see underwater swimmers representing this. He is young, in a jungle setting, with two fanciful "instincts" guiding him as swooping bird-like acrobats initially menace, then delight. As an adolescent, he enters a desert, where a man spins a large cube of metal tubing. He leaves his instinct-guides behind, and enters a garden where two statues dance in a pond. As he watches their sensual acrobatics of love, he becomes a man. He is offered wealth (represented by a golden hat) by a devil figure. In a richly decorated room, a scruffy troupe of a dozen acrobats and a little girl reawaken the old man's youthful nature and love.

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It's night on a Paris bridge. A girl leans over Seine River with tears in her eyes and a violent yearning to drown her sorrows. Out of nowhere someone takes an interest in her. He is Gabor, a knife thrower who needs a human target for his show. The girl, Adele, has never been lucky and nowhere else to go. So she follows him. They travel along the northern bank of the Mediterranean to perform.

João is a lonely boy living in the outback. No friends, no mother, and no bond with his father, he finds a chance to overcome his fears and a possibility to fit in when a small circus arrives in town.

Nora Moran, a young woman with a difficult and tragic past, is sentenced to die for a murder that she did not commit. She could easily reveal the truth and save her own life, if only it would not damage the lives, careers and reputations of those whom she loves.

To ensure a full profitable season, circus manager Brad Braden engages The Great Sebastian, though this moves his girlfriend Holly from her hard-won center trapeze spot. Holly and Sebastian begin a dangerous one-upmanship duel in the ring, while he pursues her on the ground.

A spirited young woman finds herself destitute and on the streets before joining a traveling carnival, where she meets a vagabond painter.

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After saving a tramp from suicide, a millionaire takes his clothing and disappears. Word is out that he will give a million dollars to anyone who is kind to a tramp.

A magician in a carnival--who actually can read minds and levitate people and objects--works with a superintelligent chimp named Alex, who can also talk. The magician and the chimp soon become the stars of the carnival, drawing in big crowds. However, the wild-animal trainer, who has been displaced by the team as the carnival's top act, decides to kidnap Alex and sell him to a medical laboratory for experimentation, thereby getting rid of his competition.