Emma Greaves is a spy for the British Secret Service.
As the series starts, she is in her mid 20s and is fairly new to Intelligence work. After her training and possibly an assignment or two assisting, she is on her first solo mission, something hard to believe considering how cool and collected she behaves. Her boss at the department is known to her as the Colonel. There is no mention as to how she came to join the Service or what her background before then was but her behaviour definitely reveals an eagerness for adventure and, even when things get dicey and her life is in peril, a love of the excitement and the danger.
Greaves is described as a lithe, athletic woman, very good looking and appealing, with thick black hair normally cut in a bob. She has an infectious light laugh and uses it often. She generally wears glasses. When someone commented to her the old adage that guys do not make passes at girls who wear glasses, she pertly replied, "oh, yes, they do!"
As the three adventures unfold it becomes clear quickly that Greaves is a remarkably self-sufficient person and agent, feeling trepidation when it is appropriate but not letting it control her, as befits a trained agent. Her tasks in these missions are different enough to show many sides of her independence. In the first she is in South Africa following a letter and minding an engineer who is always in trouble. In the second she purposefully becomes a murder target to ferret out enemy agents who have already killed one woman. And in the third she is in another foreign country hunting down conspirators in a global plot.
Not bad for a young woman all on her own.