Sidney Bruhl is a fictional character from the play "Deathtrap," written by Ira Levin. He is a successful but struggling playwright who becomes involved in a dangerous plot to regain his former glory. Sidney's character is complex, showcasing themes of ambition, jealousy, and moral ambiguity. In the story, Sidney's life takes a dramatic turn when he encounters a young writer named Clifford Anderson, who has created a promising new play. Sidney's interactions with Clifford lead to unexpected twists, highlighting the lengths to which he will go to achieve success and the consequences of his actions.