Another of the great books in the Jack Ryan series The Sum of All Fears is about a nuclear bomb going off in the United States-something that has never happened before. This book, like all of his others posses several tightly woven plotlines. The best to me was John Clark, marriage counselor. The thing I found especially interesting was that Clancy finally showed a chink in the boy scout armor of Jack Ryan (he was really getting on my nerves). After reading this I can't wait to tackle Debt of Honor.