 It shows his mother and daughter encouraging him to talk to neurologists to try to find out how Wallis had regained speech after such a long time.The program featured several well-known doctors, including Dr. Caroline McCagg, the medical director of the JFK Center for head injury in New Jersey, Dr. Joe Giacino, a neuropsychologist who said Wallis' brain retained a lot of information from before 1984 but hardly any after 1984 because Wallis lost the ability to store new memories and was essentially amnestic, and Dr. Martin Gizzi, a neurologist who showed that, owing to damage to the frontal lobes, he could not process experiences into memories.Also featured in the program was the neuropsychologist professor Roger Llewellyn Wood.