At the dawn of the 20th century Detective William Murdoch (Yannick Bisson), the methodical detective and his multi-talented wife Dr Julia Ogden (Hélène Joy) enlist radical forensic techniques like fingerprinting and ultraviolet light to solve a range of gruesome murders.
Murdoch's associates include his gruff boss Inspector Thomas Brackenreid (Thomas Craig), Constables George Crabtree (Jonny Harris) and Henry Higgins (Lachlan Murdoch), and eccentric Detective Llewellyn Watts (Daniel Maslany). All are valuable allies helping Murdoch solve cases lurking in the nooks and crannies of Victorian society.
As series 14 of the internationally acclaimed series begins, Detective Murdoch continues his inventive detective work with Ogden's unflinching support even after an investigation leads him to a family member that he never knew about. Brackenreid and Margaret's marriage, now on the mend, is tested once more, and Crabtree's relationship with Effie Newsome is threatened by a potentially volatile interloper.
Family relations also loom large for Higgins now that Ruth is pregnant. Unfortunately, Watts' secret love affair faces dangerous scrutiny, while Violet Hart's now public liaison with a wealthy playboy causes social outrage.
And, in the opening episode Murdoch and the Tramp, William encounters a pair of silent screen icons.
A Victoria Day carnival turns sour after a man falls to his death and, as Murdoch and Crabtree investigate, they meet Charlie Chaplin, a cocksure Englishman, who says the victim was an insult comic who tussled the previous night with performer Ed Ward.
Ward claims Chaplin's friend Stan Laurel was also miffed and there was argument in the hotel. But as the investigation proceeds, Murdoch suspects the intended victim was actually Mr Chaplin himself.