Fired from 6 (NC/NAC) for having failed in a small mission to America (not the one chronicled in #3), McAlpine quickly learns that several agencies are after his life. Reluctantly he accepts a job with a high-class criminal group.
Note: this has little to do with spying but is one heckuva great yarn. Unfortunately, when you reach the end of the book, you are likely to look for missing pages. I did. Twice.