Lost (season 6)
Soon after returning on Flight 815, Desmond has been tasked to ensure that bandmember Charlie stays sober to appear at a benefit concert for Charles Widmore. Charlie keeps talking about some imaginary, profound romance with a blonde girl, as if in some dream. Trying to rebel against Desmond, he grabs the steering wheel, and the car goes into the harbor. Underwater, looking back inside the car to save Charlie, he remembers seeing "NOT PENNY'S BOAT" written on Charlie's hand, but not actually, then pulls him to the surface. They get rescued to the hospital, and Desmond asks, "Who is Penny?". Some memories come back, and Desmond begins to orchestrate a plan: at the school, he hits John Locke with his car, causing him to need surgery, led by Jack Shephard at the hospital. Desmond turns himself in to the police station for Sawyer, who puts him in a jail cell near Kate and Sayid.