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)
Jonny Harris Constable George Crabtree Constable George Crabtree See fewer	Still Standing (2015)
Lachlan Murdoch Constable Henry Higgins Constable Henry Higgins See fewer	Cheaters (2002)
Shanice Banton Violet Hart Violet Hart See fewer	Race (I) (2016)
Mark Taylor Isaiah Buchanan Isaiah Buchanan See fewer	Cinderella Man (2005)
Samantha Walkes Cassiopeia Bright Cassiopeia Bright See fewer	Orphan: First Kill (2022)
Hannah Galway Ellen Kirby Ellen Kirby See fewer	Sex/Life (2021)
Jonathan Goad Colonel Michaels Colonel Michaels See fewer	Reign (2013)
James Gerald Hicks Robert Walsh (as James Hicks) Robert Walsh (as James Hicks) See fewer	Midway (2019)
Nik Salt John Walsh John Walsh See fewer	What We Do in the Shadows (2019)
Niamh Carolan Maggie Drew Maggie Drew See fewer	Wintertide (2023)
Mike Shara Dr. Grainger Dr. Grainger See fewer	Designated Survivor (2016)
Robert Ifedi Recruit Recruit See fewer	Chrysalis (I) (2017)
Roland Piers David Symington David Symington See fewer	Murdoch Mysteries (2008)