MODEL RELEASED. Kidnap victim. Bound and gagged female kidnap victim, lying in the back of a motor vehicle. Forensic science may be able to help convict the kidnapper by finding evidence to link the criminal to the crime scene. This may include blood under the victim's fingernails, deposited during a struggle with the kidnapper. Hair, other organic material and rope and clothing fibres can cross- contaminate the victim, the motor vehicle and the kidnapper's clothes. Even analysis of the earth and dirt can help narrow the scope of the police investigation.