The legacy of literary icon Sherlock Holmes is alive and well in 1912 Canada, where best friends Merinda Herringford and Jem Watts continue to develop their skills as consulting detectives. The city of Toronto has been thrown into upheaval by the arrival of radical anarchist Emma Goldman. Amid this political chaos, Benny Citrone of the Royal North-West Mounted Police arrives at Merinda and Jem's flat, requesting assistance in locating his runaway cousin--a man with a deadly talent. While Merinda eagerly accepts the case, she finds herself constantly butting heads--and hearts--with Benny. Meanwhile, Jem has her hands full with a husband who is determined to keep her out of harm's way. As Merinda and Jem close in on the danger they've tracked from Toronto to Chicago, they uncover a sinister plot to assassinate presidential candidate Theodore Roosevelt. Will they be able to save the day and resolve the troubles threatening their future happiness before it's too late?