Tom Witzky is a fictional character from the 2002 horror film Stir of Echoes, directed by David Koepp. He is portrayed by actor Kevin Bacon and is depicted as an ordinary man who experiences unsettling supernatural events after being hypnotized at a party. As the story unfolds, Tom becomes increasingly troubled by visions and voices, leading him to uncover a dark mystery connected to his home and the spirit of a young girl. His journey explores themes of perception, reality, and the impact of the past on the present.