The psychological evaluation analyzes Albert Fish, known as the "Vampire of Brooklyn". He was a serial killer, child molester, and rapist who engaged in sexually deviant acts that escalated to murder over 50 years. He suffered from numerous psychological disorders and paraphilias. Due to the severity and duration of his pathology, effective rehabilitation would have been unlikely. Research indicates intervening early with children exhibiting deviant behaviors can help circumvent them becoming sex offenders.