The twelve adult books written by W. E. Johns are
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6. THE UNKNOWN QUANTITY (1940) |
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8. DR. VANE ANSWERS THE CALL (1950) |
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10. NO MOTIVE FOR MURDER (1958) |
11. THE MAN WHO LOST HIS WAY (1960) |
12. WINGED JUSTICE AND OTHER UNCOLLECTED STORIES (2001) |