Savvy Bent is a freelance agent.
That does not tell anyone much which is reasonable because she doesn't want anyone to know so she keeps it quiet or, more likely, because it is all still confusing to her so it is confusing to the rest of us.
When we first meet Bent, she is living in Paris with her father. Originally from Pennsylvania and still having a home there, the two moved to France and Dad started a small business to earn a living. He didn't make anything or repair anything or buy or sell anything. He spied. Not for real, though. He ran a real-life game of spies. Just as there are living theaters for solving murder mysteries, there are such troupes for pretending to be a spy and Dad runs one. He is very good at it and he has trained Bent to be good as well.
Not that we really see any skills at the beginning of the first adventure because Savvy Bent is just turned 18 and is in the process of falling in love with the handsome young Malcolm who is part of the company of actors and when Bent is around him, she tends to get confused and clumsy and goofy. Luckily for her, when she is not thinking about it, the training she got from Mom and Dad kicks in and she handles herself quite well.
Speaking of Mom, she disappeared several years ago. Bent remembers her quite well growing up. Remembers mom baking cookies and telling her stories and doing all the normal mom stuff. She also remembers Mom being an exercise nut, running many miles each day. Remembers her target-practicing in the backyard with a variety of guns. And then there was the knife throwing. Bent's friends at the time stopped coming over.
Then, as said, Mom vanished and Dad and Savvy moved to Paris to start the Spy Games company and then Malcolm entered her life and then people started shooting at the both of them and then Mom shows up again all mysterious-like and then the next thing Bent knows she is working with her Mom in a real-life spy business and even more people are trying to kill them all and Malcolm pops in and out and is still good looking enough to throw Bent off her game.
Life around Savvy Bent is interesting, confusing, and usually dangerous.