Bernard J. Whalen is a lieutenant in the NYPD, where he has served for more than 34 years. He has published two books, The NYPD's First Fifty Years and the novel Justifiable Homicide. Philip Messing has been a crime reporter for the New York Post for more than 40 years. Robert Mladinich is a retired NYPD detective, who has named Cop of the Year in 1985. He as written a number of true crime books, including From the Mouth of the Monster: The Joel Rifkin Story, as well as articles for magazines including Playboy and Details. He is also the writer/editor for Frontline, a publication of the NYC Sergeants Benevolent Association.