Red thread is a term often used in literature, film, or storytelling to describe a common narrative thread, a recurring idea, or a symbolic connection that unites events, characters, or themes. In many cultures, the 'red thread' is a metaphor for destiny or predestined connections – originating from East Asian mythology, where it is said that people connected by an invisible red thread are destined to meet, regardless of time, place, or circumstances. In art and writing, the red thread can be the subtle element that provides coherence and depth to the story, guiding the reader through a labyrinth of seemingly disparate events, yet united by this invisible thread.