Jenna Royal is an agent with The Company.
When we first come across her, she and her sister Ruby are agents with MI6 and have been for some time, long enough to be known as a couple of undercover operative who got the job done. Then a traitor in the organization betrays their mission, Ruby is killed, and Jenna barely makes it out alive. This is told in the first couple of pages and mentioned in several promotion blurbs so no real spoilers there.
For the next year, after quitting MI6 in disgust, she earned her keep doing jobs that do not interest her but which pay the bills. She worked debt collection though "threatening the liars and idiots made her feel like dirt". She was a door guard at a nightclub until she was recognized. Then a short series of "one-off jobs" came before an invitation to a meeting for a possible job.
That job was with a man named Tom Barrington, former Deputy Directors of Operations at MI6 before the debacle that changed Royal's life. The pitch to her was simple. "We want to create a new, independent secret service, Jenna. And the truth is I want us to build it around you..."
The story then jumps ahead a tad to shortly after the creation of this new service, known as The Company, which is defined as "some kind of quasi-military intelligence outfit, run independently of state control. It's sponsored by some kind of wealthy benefactor who gives his little pet-project the licence to do whatever he pleases in the name of freedom as he sees it." It is also said that "The Company acts as a backstop for UK military intelligence."
The adventures which concern The Company do not concern the actions of Royal only as there are several other agents in the organization that Royal works closely with but she seems to be the center of the action in most events. Most interesting of these others are Eva Roberts, an impressive red-head, and her partner Dan Bradley, both private detectives 'seconded' to the Company a while before and still with it helping Royal.
Royal is described as 'fiery', a term which is often used with redheads but which does apply to a very blonde-haired Royal. Considering her ongoing anger over the death of her sister that is understandable but even before that death, she showed she was very quick to irritate. When dealing with opponents, this is sometimes a good thing but when dealing with her bosses, either at MI6 or later The Company, this is not so good.