Very little is known about Phyllis Paul and she is little-known today, although she received very positive reviews for her work at the time of publictaion. A subtle novelist, her work invokes an atmosphere of the supernatural and often allows for a supernatural interpretation.
Excerpt from tartaruspress.com

Here are her 11 known works:

1.We Are Spoiled, 1933
2, The Children Triumphant, 1934
3. Camilla, 1949
4. Constancy, 1951
5. The Lion of Cooling Bay, 1953
6. Rox Hall Illuminated, 1956
7. A Cage for the Nightingale, 1957
8. Twice Lost, 1960
9. A Little Treachery, 1962
10. Pulled Down, 1964 (Also published as Echo of Guilt, 1966)
11. An Invisible Darkness, 1967