Name	Known for
Yannick Bisson Detective William Murdoch Detective William Murdoch See fewer	Murdoch Mysteries (2008)
Helene Joy Dr. Julia Ogden (as Hélène Joy) Dr. Julia Ogden (as Hélène Joy) See fewer	Murdoch Mysteries (2008)
Thomas Craig Inspector Thomas Brackenreid Inspector Thomas Brackenreid See fewer	Murdoch Mysteries (2008)
Daniel Maslany Detective Llewellyn Watts Detective Llewellyn Watts See fewer	Impulse (2018)
Shanice Banton Violet Hart Violet Hart See fewer	Race (I) (2016)
Lachlan Murdoch Constable Henry Higgins Constable Henry Higgins See fewer	Cheaters (2002)
Peter Keleghan Terrence Meyers Terrence Meyers See fewer	Ginger Snaps (2000)
Peter Stebbings James Pendrick James Pendrick See fewer	Defendor (2009)
Dylan Taylor Agent Felder Agent Felder See fewer	Charlie Bartlett (2007)
Matthew Bennett Allen Clegg Allen Clegg See fewer	Battlestar Galactica (2004)
Christine Horne Svetlana Tsiolkofsky Svetlana Tsiolkofsky See fewer	The Captive (I) (2014)
Alex Allan Clegg's Henchman Clegg's Henchman See fewer	Murdoch Mysteries (2008)
Lucy Hill Telegrapher Telegrapher See fewer	Baroness Von Sketch Show (2016)
Perry Mucci Telegrapher's Manager Telegrapher's Manager See fewer	The Big Cigar (2024)
Marvin Karon Professor John Gatlin Professor John Gatlin See fewer	Charlie Bartlett (2007)
Jonny Harris Constable George Crabtree (archive footage) Constable George Crabtree (archive footage) See fewer	Still Standing (2015)
Kate Greenhouse Sally Pendrick (archive footage) Sally Pendrick (archive footage) See fewer	He Never Died (2015)
James Finlay Fraser Dr. Quinn (uncredited) Dr. Quinn (uncredited) See fewer	Departure (2019)