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Joint pseudonym of the husband-and-wife writing team John K. and Frieda M. Dughman. They also wrote radio plays and short stories. |
Titles and year of publication:
| 1) Craven Castle | 1972 |
| 2) Moonlake Manor | 1972 |
| 3) Macabre Mansion | 1973 |
| 4) Shades and Shadows | 1973 |
| 5) Witch Haven | 1973 |
| 6) Wraithwood | 1973 |
| 7) Glowering Gables | 1974 |
| 8) The Grinning Ghoul | 1974 |
| 9) Shadow on the Moon | 1974 |
| 10) Bride of the Unliving | 1975 |
| 11) Death Rides a Black Steed | 1975 |