It is essential for anyone involved in the investigation and prosecution of child abuse cases to be aware of the often hidden and subtle warning signs of Munchausen by Proxy. Munchausen syndrome, classified as a mental illness, occurs when a person inflicts or fabricates illness upon themselves, often as an attention-getting device. Munchausen by Proxy (MBP) is an even more insidious disorder in that such illness or injury is inflicted upon a victim-usually a child. TOC:Identification of Standards.- The Complicated Domain of MBP Understanding Characterization of the Munchausen Family.- Profiling.- Comprehension of Thought.- Understanding Munchausen and Gaining Entry Into the Realm.- Application of Knowledge.- Assessing the Lethality of the MBP Offender.- False Reports and Serial Victimization.- Interviewing the Munchausen-Related Offender.- Stabilization of Theory.- Evidence Procedures.- The Multidisciplinary Approach to Case Management.- Child Protection.- Mastery of Deception: Diversity of the Munchausen Theme.- Chronically Ill Children Caught in a MBP World.- The Unseen Murder of Children.- Alternative Victimization.- MBP as a Defense in Sexual Battery Cases.- The Significance of Fire in MBP and Munchausen Syndrome Cases.- Principles of Engagement.- The MBP Prosecutive Stance.- Closure.