Anthony Horowitz Creator, Writer Steve McFadden Joe Waterman Actor Timothy West Dr William Collins Actor Reece Dinsdale Michael Davies Actor Susannah Harker Barbara Davies Actor Scot Williams David Actor Gillian Kearney Catrin Palmer Actor Richard Ridings DCI Quarry Actor Alan Stocks Jack Dobbs Actor Sharon Maiden Sandra Waterman Actor Ryan Philpott Angus Thompson Actor Tom Goodman-Hill David Actor Chiwetel Ejiofor DS McCorkindale Actor Veronica Lang Alice Young Actor Ginny Holder Caroline Actor Mirren Delaney Sue Actor Josie Kidd Sheila Matthews Actor James Puddephatt Frank Actor Sarah Preston Sandra Actor Lucy Black Sarah Collins Actor Nitin Ganatra Riaz Chowdry Actor Coky Giedroyc Director Ferdinand Fairfax Director Frank W. Smith Director Nick Jones Director David Innes Edwards Director Simon Sharkey Writer Stephen Leather Writer Guy Burt Writer