Concealed is a mystery thrill ride that takes the reader through the events that enable a commercial pilot to formulate a plan for revenge against the United States. His plot takes advantage of radar limitations over desolate stretches of ocean, combined with other detection constraints that can render an airplane nearly invisible. Those intentions soon capture the interest of terrorist organizations that realize the potential to not only conceal an airplanes true identity but turn it into a weapon of mass destruction on a scale never thought possible.