Leslie Frost has Jason Bourne's fatalism, James Bond's gadgets, and Sydney Bristow's issues with romance. She's also a virtuoso violinist, which is a great cover for a spy, except when it's not.
Frost the Fiddler is definitely dated, full of just-post-Cold War politics and Germany on the brink of reunification, but the character of Frost holds up remarkably well. I was so engrossed in this book that I got off at the wrong bus/train stop three separate times today.