Merinda Herringford and Jem Watts never could have imagined their crime-solving skills would set them up as emblems of female empowerment in a city preparing to enter World War I at the behest of Great Britain. Yet, despite their popularity, the lady detectives can’t avoid the unrest infiltrating every level of society.

A war measure adopted by Mayor Montague puts a target on Jem and her Italian husband, Ray DeLuca. Meanwhile, deep-rooted corruption in the police force causes their friend, Constable Jasper Forth, to wonder if his thirst for upholding the law would be best quenched elsewhere.

In spite of these distractions, Merinda, Ray, and Jasper join with other honorable and courageous city leaders in the Cartier Club, which exists to provide newly arrived residents of Toronto with a seamless integration in the city.

When a club member turns up dead, bearing a slanderous white feather, will Merinda, Jem, and those they hold dear be able to solve the high-stakes mystery before they’re all picked off, one by one?