Yannick Bisson Detective William Murdoch Actor Helene Joy Dr. Julia Ogden Actor Jonny Harris Constable George Crabtree Actor Thomas Craig Inspector Thomas Brackenreid Actor Georgina Reilly Dr Emily Grace Actor Lachlan Murdoch Constable Henry Higgins Actor Nigel Bennett Chief Constable Giles Actor Jonathan Watton Dr Darcy Garland Actor Arwen Humphreys Margaret Brackenreid Actor Colin Buchanan Professor Harms Actor Joe Cobden Gideon Turner Actor Paul Amos Dr Roberts Actor Frank Chiesurin Seth Morgan Actor Nicholas Bode William Murdoch Jr Actor Gail Harvey Director Tom Jeorin Film Editor