Shaun Evans DS Endeavour Morse Actor, Director, Executive Producer Roger Allam DCI Fred Thursday Actor, Executive Producer Anton Lesser Chief Superintendent Reginald Bright Actor James Bradshaw Dr. Max DeBryn Actor Sean Rigby DS Jim Strange Actor Abigail Thaw Dorothea Frazil Actor Caroline O'Neill Win Thursday Actor Jack Bannon Sam Thursday Actor Sara Vickers Joan Thursday Actor Imogen Daines Mabs Portman Actor Nicholas Farrell Sir Alexander Lermontov Actor Simon Harrison Ronnie Box Actor Jane Lapotaire Madame Belasco Actor James Anderson Fergus Brathwaite Actor Nicholas Boulton John Graham-Scott Actor Rob Ostlere Donald Fischer Actor Kirstin Louie Christina Poole Actor Jenny Galloway Mrs Pat Treadle Actor James Doherty Mr. Lee Actor Leaphia Darko Lindsay Trench Actor Tamsin Newlands Margeaux Quincannon Actor Russell Lewis Writer, Executive Producer Charlotte Webber Producer Damien Timmer Executive Producer Helen Ziegler Executive Producer Matthew Slater Original Music Barrington Pheloung Original Music