Mid-Day Mystery Book Club

After the Great War, childhood friends Tommy Beresford and Prudence "Tuppence" Cowley reunite and decide to start their own business, "The Young Adventurers, Ltd", planning to hire themselves out with "no unreasonable offer refused". They are hired for a job that leads to many dangerous situations, as an American millionaire searches for his cousin.

Limited to 15 people.

Book description and cover courtesy of Wikipedia