The Spider's Web is the third novel is the series of tie-in novels written by Nigel McCrery. It was first published on 2nd August 1999.
"Sam is asked to perform a second autopsy on a teenage boy who was killed in a tragic joyriding accident, when despite his parents' protests, the results of the autopsy seem clear—he died of multiple injuries consistent with a high-speed car crash. However, as Trevor performed the post mortem, Sam is reluctant to go up against her friend and colleague, in an attempt to find the answers that the family are looking for. However, reading Trevor's post mortem report prompts Sam to go ahead with the second autopsy, and her findings seem to suggest that the accident may have been no such thing. But neither Trevor nor Superintendent Tom Adams accept her findings, and believe that she is reading between the lines."