After a child is mysteriously shot, a ballistics expert helps find who fired the gun and from where. When the body of a woman is found in a river, a handwriting analyst helps solve the crime.
A food expert is brought in to explain what killed a healthy 38-year-old man. An expert witness reconstructs the face of a murdered woman to help the police identify the victim.
An expert in mobile phone technology tracks the movements of a murder suspect, and an expert in art fraud determines whether a very expensive painting is genuine or fake.