- Yannick Bisson (Detective William Murdoch)
- Helene Joy (Dr. Julia Ogden)
- Thomas Craig (Chief Constable Thomas Brackenreid)
- Jonny Harris (Constable George Crabtree)
- Lachlan Murdoch (Constable Henry Higgins)
Murdoch Mysteries — S12E6
Episode: Sir. Sir? Sir!!!
Air Date: 2018-10-29
Runtime: 44 min
Overview
Murdoch investigates an astronomical phenomenon with a strange impact on his colleagues’ behavior and dire implications for Toronto.