A man is found murdered at a Lewis Carroll-themed costume party. All clues point to the guest dressed as the Mad Hatter.

A Robin Hood-like bank robber with a flair for style kisses pretty female bank employees before donating the money he steals to a local orphanage.

The murder of a young student a an exclusive girls' school leads Murdoch to conclude that someone posing as a vampire is preying on several of the young girls.

When a convent tries to bury one of its most venerated members in the churchyard, another body is found in the plot. Murdoch is reunited with his sister.

While investigating a lethal gunshot on a trolley that no one seems to have heard, Mudoch finds that the disappearance his old girlfriend Anna Fulford may be linked.

A telephone operator with ambitions to be a detective believes she's heard a woman strangled on an open line but Inspector Brackenreid is reluctant to believe her.

Murdoch and Crabtree investigate when workmen uncover a body near some former docks. The murdered remains date from perhaps the mid-1860s. A whiskey flask clenched in the man's hands. Murdoch inspects the flask and finds a secret compartment containing what appears to be part of a coded message. Investigations lead to political conspiracies being uncovered and a far bigger case is on their hands than first expected.

Murdoch makes a surprising discovery at a dolls house fair: a made-to-scale diorama of a cul-de-sac Toronto street replete with miniature residents. In one of the houses, the artist has placed a hand firing a gun. This is no ordinary model - it's a crime scene. Murdoch finds the creator of the streetscape, an autistic 19-year-old, Lydia, who communicates best through model building. No one has reported a murder yet, but using the model's intricate clues left by Lydia, Murdoch discovers that someone indeed has been murdered – but what happened and why? Someone is far from happy by his investigations, and things begin to get even more sinister in the neighbourhood.

Julia is getting married to Rafe in a week - the letter she wrote to Murdoch confessing her love for him is lying beneath his desk blotter and he has no idea it exists. On top of his heartbreak, he has made no progress on a case involving a young French woman who had arrived in Toronto to visit her married sister and then vanished without a trace. The case is further complicated when Murdoch arrests a dashing young Frenchman breaking into a suspect's apartment, only to learn that he is Detective Marcel Guillaume, who has been hired by the disappeared woman's father.

Note: Guillaume is the real-life inspiration for author Georges Simenon's main character, Inspector Maigret.

Dark secrets surface at the Jenkins household when Murdoch questions the family and servants of murdered patriarch Percival Jenkins.

Despite an unsolved break-in at the station house, Murdoch announces he's taking a vacation. His holiday turns out to be a trip in response to a telegram from Dr. Ogden requesting his help in Buffalo to solve what she thinks is a murder at The Children's Hospital. Murdoch agrees to go - thoughts of rekindling their relationship in the back of his mind. The case involves a 14-year-old terminally ill boy, Ben Wilkie, who has died under what Ogden feels are mysterious circumstances, not his cancer.

Members of a squad of Canadian soldiers who recently were deployed to South Africa are stricken with a mysterious illness and others are being murdered.

Murdoch struggles to work with the new coroner and clashes openly when a cement block found near the water contains the remains of not one but three men.