Murdoch is assigned to an adjacent station house when one of their officers is found murdered in Toronto's Chinatown, his theories on the crime come under question.

After testifying at Mary Thompson's trial for murdering her husband Percival that the woman is criminally insane and should be committed to an asylum, Julia Ogden receives an anonymous postcard saying she has condemned an innocent woman. Julia and Detective Murdoch re-examine the case and find an anomaly in the time-line but the Crown Attorney isn't interested as he's convinced the woman is guilty. Further investigation reveals that Percival Thompson's business partner, Alexander Wainwright, automatically assumed 100% of their business upon Thompson's death - an agreement they signed just one week before the murder. Wainwright promptly vanishes. With the assistance of the indefatigable Mrs. Brackenreid, who has clearly taken charge, Julia is in the final preparations for her wedding. She and William make it to the altar on the big day but midway through the ceremony they realize they overlooked something very important in the Thompson case.

Mr. Frank Parker, a white man, who was visiting an all black church for Sunday's service, was found dead by Miss James, Dr. Ogden's protégé. The new Chief Constable seems to be in a hurry to charge a black paritioner even before the crime has been investigated by Murdoch.

Murdoch goes undercover to solve a murder. Crabtree tries to sample his first banana split.

Murdoch and Brackenreid unwittingly put their careers at risk when they investigate high-level police corruption.

A conspiracy to silence a burlesque dancer puts Murdoch and the Station House No. 4 team in unforeseen danger.

Up from Ashes- Murdoch is in trouble. He is accused of murder, and he must prove his innocence. Julia is kidnapped, there is a new chief from the UK, friends gather, and there is a surprise.