The subject of today's file from your FBI is impersonation. Occasionally, it is possible to remove any ill after-effects of a crime. When a criminal is apprehended after a burglary for example, and his loot is returned intact to the victim, no-one is penalised except for the law breaker. However, such complete restitution is never possible in the case of one particular criminal. The imposter. He usually works with forged credentials, or fictitious letters of introduction from well-known people. Even after the imposter is apprehended, he leaves in his wake a wave of suspicion - a feeling from his victims that never again will they be able to believe anyone...