Some lose threads from book #3, The King of Plagues, get pulled on and things start to unravel for Joe Ledger and the DMS. It was uncovered back then that the Seven Kings had a list of all DMS members and their families, which was one of the main reasons that taking them out became so urgent. Once the Kings were all neutralized it seemed like the risk to the DMS families was eliminated but this turns out not to be true. With Joe and Rudy in attendance to watch the Orioles play the Phillies on opening day a terrorist attack targets not just the innocent baseball fans in attendance but the DMS agents in particular. The remnants of the Seven Kings are back and this time they are making it personal.
Predator One - this time it gets personal