Christie, Maggie, & Vicky--a.k.a. Christie & Company--are best friends with a passion for solving mysteries. On an April vacation trip to Quebec City, Christie sees her friend Scott's best friend Ethan put tip money from a restaurant table into his knapsack. Christie would like to forget it, but she can't, because Ethan steals again. Meanwhile, as the girls soak up the history & culture of the city, daily life at their bed-&-breakfast--with Monsieur & Madame LeClerc, Madame's spirited teenage daughter, Sophie, & Sophie's creepy eleven-year-old stepbrother--gets stranger & stranger. Before long the three friends are swept into the shadowy affairs of the B&B & begin to suspect that members of the LeClerc family are involved in something illegal.