"Mystery in Old Quebec" (First Edition, Book Club Edition) Mary C. Jane - 1956
 
Siblings Kerry and Mark Nelson find themselves on an unexpected ten-day adventure when they accompany their father on a business trip to the historic, walled city of Quebec. Staying at a quaint but unsettling rooming house called La Maison des Amis, Kerry immediately senses that something is wrong. The mystery deepens as she hears the sounds of someone crying behind closed doors at night and her own clothing mysteriously disappears only to reappear with strange, cryptic messages. Between exploring the atmospheric landmarks of the old city and practicing their French, the children—aided by a helpful local friend and a persistent mongrel pup—must piece together these baffling clues to unmask a clever deception and solve the secret hidden within the inn.
 
Collation / Page Count: Complete