Police should begin their investigation by asking the caretaker for an explanation of the child's bruises or injuries. All bruises must be investigated. If bruises are found on two or more planes of a child's body, investigators should be suspicious. A physical examination of the suspected child victim must be conducted and the data clearly and accurately recorded. Laboratory data should be obtained to support or refute the evidence of abuse. If the reported history of an injury or injuries changes during the course of an investigation, or if there is conflict between two adult caretakers as to the cause of injury, the likelihood of child maltreatment increases. The demeanor of the child's parents or caretakers should be carefully observed. This booklet outlines key points in the areas of repetitive accidents, skin injuries, and bruises. The latter discussion focuses on the age dating of bruises, bruise configurations, and natural or normal bruising. Guidelines are also provided for investigating the following types of injuries: burns, poisoning, head injuries, eye injuries, and internal injuries. Also discussed are criteria for distinguishing sudden infant death syndrome from fatal child abuse and other medical conditions. 23 supplemental readings and a list of 23 organizational resources