Lewis. S04 E02. Dark Matter.

First broadcast 9th May 2010.

An Oxford professor, also an amateur astronomer and recently renewed churchgoer, is found dead in the school observatory under suspicious circumstances.

Warren Clarke - Roger Temple
Deborah Cornelius - Dr Ella Ransome
Christopher Bowen - Professor Andrew Crompton
Sophie Ward - Isobel Crompton
Clare Holman - Dr. Laura Hobson
Robert Hardy - Sir Arnold Raeburn
Ruby Thomas - Kate Cameron
Diana Quick - Gwen Raeburn
Anthony Calf - Malcolm Finniston
Jonathan Cullen - Father Francis
Annabelle Apsion - Babs Temple
Andrew Hawley - Jez Haydock (as Andrew Hawyley)
Kevin Whately - DI Robert Lewis
Laurence Fox - DS James Hathaway
Bernard Lloyd - Ted Temple
Liz Crowther - Mrs Leeming
Ben Addis - Junior Porter
Nicholas Howe - Undergraduate
Rebecca Front - Chief Superintendent Jean Innocent
Robin Kermode - Interviewer
Colin Dexter - Diner
Chris Wilson - Police Firearms Tech