A forensic registered nurse (RN) assists law enforcement officers by helping to obtain evidence of crimes while caring for victims. In this role, you may work in a hospital emergency room, social services organization, or with a medical examiner. You provide medical care to victims and recover evidence, such as bullets or clothing. Forensic RNs may also take photographs of wounds and document your observations and conversations with the victims; all documentation must follow specific procedures and regulations to ensure the evidence is admissible in court. If a case goes to trial, a forensic RN can give testimony as an expert witness. Some forensic RNs choose to specialize in particular areas, such as death investigations, psychiatric forensic nursing, or domestic violence and sexual assault.