Aaron's eyes close and the heart monitor starts beeping. Suddenly, Mulder's heart monitor flatlines. She is seen lying in a hospital bed with a heart monitor in the background. Wearing a heart monitor and sound camera, Buffy goes out alone. A heart monitor is attached to the inmate. A CGI heart monitor was shown over the titles. He wore a heart monitor during his American Legion season. But then her heart monitor signals that her heartbeat flatlined and she dies. A heart monitor around the wearer's chest checks for signs of distress. During this conversation, Jack's mother uses his heart monitor as a lie detector.