Ben Reich is a fictional character from the science fiction novel "The Demolished Man," written by Alfred Bester. He is a wealthy businessman in a future society where telepathy is common, making it difficult to commit crimes without being detected. Reich is determined to commit the perfect murder, which drives the plot of the story. Reich's character is complex, showcasing themes of ambition, morality, and the consequences of one's actions. His interactions with telepaths and the law enforcement officer Lincoln Powell highlight the challenges of living in a world where thoughts can be read, adding depth to the narrative.