|   | Detective William Murdoch, played by Yannick Bisson A young detective using radical forensic techniques, like fingerprinting and trace evidence, to solve some of the city's most gruesome murders. Though his unconventional approach elicits ridicule from fellow officers. | 
|   | Dr. Julia Ogden, played by Helene Joy A staunch ally who shares the detective's fascination with forensic science. | 
|   | Inspector Brackenreid, played by Thomas Craig Murdoch's skeptical boss. | 
|   | Constable George Crabtree, played by Jonny Harris Murdoch's eager but inexperienced right-hand man. | 
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