Although he had been warned by his doctors before leaving the United Kingdom not to exert himself because of his heart condition, he appeared to be in good spirits and participated vigorously in the day's panels, and was looking forward to a belated birthday celebration which was planned for Saturday evening, as well as screenings of all of his surviving complete "Doctor Who" stories, including "The Dominators", which he was particularly eager to see again, on Saturday afternoon. Troughton suffered a third and final heart attack at 7:25 am the next day, just after ordering breakfast from the hotel. According to the paramedics who attended the scene, he died instantly.