John Doe

'Angela,' asked Doctor Cox, 'are you all right? Do you know where John Doe is?'

Dr. Cox asks a number of questions to a man found in the city and taken to hospital, but he can't answer one's own name, address and age and so on. Then  Dr. Cox call him John Doe and he live near a nurse who help him revive his memory. However, John Doe pretended not to have lost memory, he was killing her.