Author: Elaine Hamilton
Born: 1882
Died: 1967
Bio: British crime fiction writer

Not much is known about Elaine Hamilton other than she wrote a series of mysteries in the 1930s featuring Inspector Reynolds of Scotland Yard. *The Westminster Mystery* (a.k.a. *Some Unknown Hand*) published in 1930 was the first of these. Other titles in the series include *Murder in the Fog* (1931), *The Green Death* (1932), *The Chelsea Mystery* (1932), *The Silent Bell* (1933), *Peril at Midnight* (1934), *Tragedy in the Dark* (1935), *The Casino Mystery* (1936) and *Murder Before Tuesday* (1937).
[Biographical note from Resurrected Press]

According to https://fr.m.wikipedia.org/wiki/Elaine_Hamilton_(%C3%A9crivain) via Google Translate, Hamilton was born in the U.K. in 1882:

Polyglot and musician, in the early 1920s she wrote a dozen detective stories for *The Yellow Magazine*.  At this time she met her future husband, Henry Holt, who also published short detective stories in the same magazine.

The couple decided to move on to novels at the turn of the 1930s. Elaine Hamilton published nearly ten novels in which her recurring hero, Inspector Reynolds, investigates, then stopped writing after 1937.

She lived not far from Monte-Carlo for a long time with her husband and traveled extensively on the roads of Europe in his company. She died in 1967.