| Hint | Extra Hint | Answer | % Correct |
|---|---|---|---|
| What Happened at ________ | Vol. 10 (1931) | Midnight | 91%
|
| While the _____ Ticked | Vol. 11 (1932) | Clock | 86%
|
| __________ Under the Window | Vol. 12 (1933) | Footprints | 86%
|
| The House on the _____ | Vol. 2 (1927) | Cliff | 77%
|
| The ____ on the Door | Vol. 13 (1934) | Mark | 77%
|
| The Secret of the Old ____ | Vol. 3 (1927) | Mill | 74%
|
| The Tower ________ | Vol. 1 (1927) | Treasure | 72%
|
| The Sinister ________ | Vol. 15 (1936) | Signpost | 70%
|
| The Secret of the _____ | Vol. 7 (1929) | Caves | 65%
|
| The Great _______ Mystery | Vol. 9 (1930) | Airport | 63%
|
| Hunting for Hidden ____ | Vol. 5 (1928) | Gold | 63%
|
| The Mystery of _____ Island | Vol. 8 (1929) | Cabin | 60%
|
| The Missing _____ | Vol. 4 (1928) | Chums | 60%
|
| The _____ Road Mystery | Vol. 6 (1928) | Shore | 60%
|
| The Hidden ______ Mystery | Vol. 14 (1935) | Harbor | 58%
|