Investigating a disputed ruling that a brilliant pre-World War I battleship gun designer committed suicide, chief investigator Isaac Bell discovers that an elusive spy with ties to a top-secret project has been staging the killings of America's leading technological minds. The Van Dorn Detective Agency assigns Isaac Bell to a case that will reveal whether a brilliant American battleship gun designer's death was a suicide or a murder. The plot contains profanity and violence. The coauthor is Justin Scott. Book #3