Detective William Murdoch is a fictional character from the television series Murdoch Mysteries, set in late 19th and early 20th century Toronto. He is known for his innovative investigative techniques, often using early forensic science to solve crimes. Murdoch is portrayed as a dedicated and intelligent detective who is ahead of his time. The character is based on the real-life detective John Murdoch, who worked for the Toronto Police Service. Throughout the series, Murdoch faces various challenges, including societal norms and technological limitations, while striving to bring justice to the victims of crime.