E.C.R. Lorac
Pen name - along with <a href=https://openlibrary.org/authors/OL1043079A/Carol_Carnac/>Carol Carnac</a> - of Edith Caroline Rivett.
Pen name - along with <a href=https://openlibrary.org/authors/OL1043079A/Carol_Carnac/>Carol Carnac</a> - of Edith Caroline Rivett.