Dirty Bomb Crisis, Jim Scott Books #29, brings back Fred and Rosemary Dupree, who are invited to spend a vacation with Jim and Holly Scott, so the four of them can get better acquainted, after their experience together in Assassin I Am. On their way to the island nation of Dominica, they stop at the Cayman Islands for a day or two, because Jim has some business to take care of there. Their vacation is cut short when Fred interrupts the attempted murder of a hotel maid. Before leaving the island, they unearth an assassination plot. The plot involves a dirty bomb, to be used by terrorists on targets a very rich Wall Street tycoon wants killed. Shortly after their return to the U.S., old friends of Jim are brought into the picture. That the possibility of a dirty bomb attack on the United States has grown since the advent of ISIS is in little doubt. It is now likely that both ISIS and al-Qaida have access to the nuclear materials needed to build such a bomb. This story adds the threat of a Constitutional crisis, if the bomb in question is used as intended. Having consulted with four different Constitutional experts, I came up with three different possible outcomes, if this bomb was used as desired by the evil man who joins forces with terrorists. The reader is free to select the one he or she wishes to.