Dame Ngaio Marsh was born in New Zealand in 1895 and died in February 1982. She wrote over 30 detective novels and many of her stories have theatrical settings, for Ngaio Marsh's real passion was the theatre. She was both an actress and producer and almost single-handedly revived the New Zealand public's interest in the theatre. It was for this work that the received what she called her 'damery' in 1966.

Robert Bruce Montgomery was born in Buckinghamshire in 1921, and was a golden age crime writer as well as a successful concert pianist and composer. Under the pseudonym Edmund Crispin, he wrote 9 detective novels and 42 short stories. In addition to his reputation as a leader in the field of mystery genre, he contributed to many periodicals and newspapers and edited sci-fi anthologies. After the golden years of the 1950s he retired from the limelight to Devonshire until his death in 1978.