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