FINAL SECONDS Will Harper, pensioned off by the NYPD Bomb Squad, goes back to work when a letter bomb kills Jimmy Fahey, his former partner, and the celebrity author Fahey is working for.  Connecting the bombing to a series of seemingly unrelated incidents involving other celebrities, Harper hooks up with a former FBI profiler named Alderman who helps him home in on a suspect.  With uncooperative officials always a step behind their every move and the killer always a terrifying step ahead, the countdown begins on the planned assassination of the killer's next victim: a visiting British princess.  The pair must stop the maniacal predator before he blows one of the world's most famous women sky high.  "Lutz always delivers the goods, and this is no exception." (Booklist)