Silent Witness Characters Overview

| Character_ | Actor | Series | Notes_ |
|---|---|---|---|
| Dr. Trevor Stewart | William Armstrong | Series 1-3 | As well as being a pathologist in his own right, Trevor was Sam`s business partner, owning half of the morgue and its facilities. Trevor decided to stay in Cambridge with his friends and family when Sam accepted the professorship position at a university in London and moved away at the end of series three. |
| Dr. Fred Dale | Sam Parks | Series 1-3 | Fred was Sam`s main assistant during post mortems and on visits to crime scenes, often identifying DNA samples at the scene of the crime, and linking them to those responsible. He was also notable for not having many speaking lines, and regularly appearing without speaking. His fate at the end of series three was not revealed. |