Silent Witness plot
Sam Ryan works in Cambridge as a forensic pathologist. The police and the Public Prosecution Service regularly request the help of its forensic laboratory for their investigations. Later Sam Ryan works in London. She made it to "Professor of Forensic Pathology" at the university there. Sam is supported in her work by her colleagues Harry Cunningham and Leo Dalton. After Sam Ryan, Nikki Alexander becomes the face of the forensics lab. She has a deep-seated sense of justice and is persistent in getting the truth out. She does not limit her research to the walls of the laboratory. The straightforward and sometimes dangerous course she sails regularly gets her into trouble, both professionally and privately. Nikki's eye for detail often uncovers surprising new evidence. Not always to the satisfaction of the police inspectors in charge of the investigation.