Whodunit Did It is the first book of the Bader trilogy. Elmer Bader is a Homicide Detective with the LAPD. A very evil criminal kills a Navy Vice Admiral during a jewelry store robbery. That brings both NCIS and the FBI into the case, since the Admiral has been nominated to the Homeland Security Secretary.
Those two organizations work with Elmer and other LAPD officers in tracking down the killer, who has killed many times in the past, and continues doing so during the course of the book. An unlikely piece of information helps the authorities close in on the killer, but he has an elaborate escape plane set in case they actually find him.
