All the Find-Outers books in order:
Book 1: The Mystery of the Burnt Cottage (1943)
Book 2: The Mystery of the Disappearing Cat (1944)
Book 3: The Mystery of the Secret Room (1945)
Book 4: The Mystery of the Spiteful Letters (1946)
Book 5: The Mystery of the Missing Necklace (1947)
Book 6: The Mystery of the Hidden House (1948)
Book 7: The Mystery of the Pantomime Cat (1949)
Book 8: The Mystery of the Invisible Thief (1950)
Book 9: The Mystery of the Vanished Prince (1951)
Book 10: The Mystery of the Strange Bundle (1952)
Book 11: The Mystery of the Holly Lane (1953)
Book 12: The Mystery of Tally-Ho Cottage (1954)
Book 13: The Mystery of the Missing Man (1956)
Book 14: The Mystery of the Strange Messages (1957)
Book 15: The Mystery of Banshee Towers (1961)
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