In 1910 Toronto, while other bachelor girls perfect their domestic skills and find husbands, two friends perfect their sleuthing skills and find a murderer.

Inspired by their fascination with all things Sherlock Holmes, best friends and flatmates Merinda and Jem launch a consulting detective business. The deaths of young Irish women lead Merinda and Jem deeper into the mire of the city's underbelly, where the high hopes of those dreaming to make a new life in Canada are met with prejudice and squalor.

While searching for answers, donning disguises, and sneaking around where no proper...