Treason

Description for TREASON by Stuart Woods:

Upon returning to New York City after a whirlwind British excursion, Stone Barrington is notified of a delicate situation within the country's administration. A close friend requires his expertise and subtlety to eradicate a destructive presence in a classified agency--only it soon becomes clear that this renegade was sent by a rival Stone has encountered before.

This is #52 in A Stone Barrington Novel.