Lachlan

Murdoch is in Bristol, England, with no memory of who he is and two gunmen chasing him through the streets. With the help of a local pub Landlady he starts to piece together an assassination plot. In Toronto Detective Hamish Sloack is assigned to help find the missing Murdoch.

Murdoch and Inspector Brackenreid are aboard the SS Keewatin after the owner, Clarence MacFarlane, receives what he believes is a threat. The Keewatin is about to depart from Toronto on its maiden voyage destined for Rochester, N.Y. and Murdoch thinks they should stay on board, especially after he sees that Julia is one of the invited guests. Their presence proves useful after MacFarlane's daughter Amy, who is engaged to her father's chief financial officer Owen Mathers, falls overboard and is nowhere to be found. As Murdoch investigates he finds there is a real threat against the Keewatin and the true facts behind Amy's disappearance.

Six months have passed since Dr. Ogden moved to Buffalo and Det. Murdoch is constantly a loggerheads with Dr. Francis, her replacement. While Insp. Brackenreid thinks highly of Francis, who was recruited from Scotland Yard, Murdoch finds him stubborn and unimaginative. He also seems to be in no rush to help Murdoch with his latest case where human body body parts were discovered on a riverbank encased in cement. A homeless man living in the woods nearby is questioned and released and Murdoch corresponds with Dr. Ogden who offers him valuable advice in her letters. He also gets help from a retired detective, Malcolm Lamb. Murdoch connects his current investigation a rape and murder that had occurred many years before.

Season five of Murdoch Mysteries opens in unfamiliar territory, as Detective William Murdoch (Yannick Bisson) leaves Toronto to try his luck while the Klondike Gold Rush in the Yukon winds down. Suspended for interfering in an investigation, on the run for surreptitiously freeing a murderer to make amends, and nursing a broken heart after Dr. Ogden's marriage to another man, he tries to escape his past, and his passion for detective work. Back in the city, newly promoted Chief Constable Giles (Nigel Bennett) makes it clear to Inspector Thomas Brackenreid (Thomas Craig), that he'll be keeping a very close eye on police matters. Meanwhile, Murdoch's beloved former associate, Dr. Julia Ogden (Hélène Joy), is now working alongside Acting Detective George Crabtree (Jonny Harris) and Dr. Emily Grace (Georgina Reilly), a feisty young protégé. In the remote north, Murdoch is pleased to discover that his fledgling prospecting career may garner great success, a small comfort after Julia's marriage to another man. But as he tries to rebuild his life, he finds himself drawn into the case of Mrs. Elizabeth Bryant (Jill Halfpenny), an innkeeper charged with murder. The plot thickens when writer Jack London (Aaron Ashmore) lends his insights, and Murdoch soon realizes that while he had hoped to leave his shattered heart and tattered career back in Toronto, his days as a detective are not behind him.

维克多（瑞沙德•斯垂克 Reshad Strik 饰）曾是一名优秀的冲浪运动员，却在职业的最巅峰因为膝盖受伤而不得不告别了赛场。他将自己对冲浪运动未尽的愿望全部都寄托在了弟弟杰西（拉奇兰•布坎南 Lachlan Buchanan 饰）的身上，这种强烈的期望常常让杰西感到痛苦不堪。福格斯（沙维尔•塞缪尔 Xavier Samuel 饰）是家中最小的一个，虽然他对冲浪也有着强烈的热情，但这种热情却总是被哥哥们忽视。　　一场意外中，维克多和杰西之间冻结多年的坚冰终于得到了化解。而福格斯也遇到了名为安迪（柯克•詹金斯 Kirk Jenkins 饰）的男孩，安迪所散发出来的雄性荷尔蒙深深的令福格斯感到着迷，而他的出轨却让维克多十分的痛苦。