A visiting professor is found strangled after delivering a controversial lecture. Lewis and Hathaway have no shortage of suspects, but when one of them is also murdered, her affair with a married professor of Criminology takes the investigation in an... (more)other direction.

David Calder, David Soul, Greg Bennett, Harriet Madeley, Huw Higginson, Jake Curran, Jason Durr, Josephine Tewson, Kemi-Bo Jacobs, Lee Nicholas Harris, Nancy Carroll, Nina Sosanya, Patrick Baladi, Pippa Bennett-Warner, Richard Southgate, Rita Davies