Raymond M. Pierce retired as a Detective First Grade from the New York City Police Department. He became a member of the New York City Police Department in 1970 and was promoted to detective in 1973. He was assigned to the East New York section of Brooklyn from 1970 to 1985, investigating violent street crime and major cases. In January of 1985, Detective Pierce received a year-long FBI fellowship in Psychological Profiling with the Behavioral Science Unit at the National Center for the Analysis of Violent Crime, FBI National Academy, Quantico, Virginia.

The fellowship was an intensive study of serial murder, equivocal death, serial rape, stalking, threat analysis, advanced interviewing and forensic investigative techniques and the process of psychological profiling, which is now known as Criminal Investigative Analysis. After returning to the New York City Police Department in 1986, he established the Criminal Assessment and Profiling Unit, within the Detective Bureau, to assist investigators with serial crimes and unsolved major case investigations. From 1986 to 19M Detective Pierce assisted local, state and federal investigators with over one thousand criminal investigations. In 1987 he established the Detective Bureau's Training Unit responsible for the yearly in-service training of New York City's three thousand detectives in enhancing their investigative skills. Detective Pierce has lectured to thousands of investigators nationally and internationally on homicide and sex crimes investigation, Criminal Investigative Analysis, stalking, interview and interrogation, serial murder, threat analysis, white collar crime, suspect evaluation and advanced investigative techniques. He also was the primary lecturer and coordinator of the Now York City Police Department's Homicide Investigator's Course from 1986 to 1998.

In addition to the fellowship program and numerous medicolegal and investigative courses, Detective Pierce holds a bachelor's degree in Behavioral Science and a master's degree in Forensic Psychology from John Jay College of Criminal Justice. He is a contributing author to the Criminal and Civil Investigation Handbook, Second Edition, McGraw-Hill, Inc., publishers. He has been the subject of two books and numerous media interviews nationally and in Australia, Canada, Europe and Japan.

Since retiring from the NYC Police Department in October 1998, he established RMP International specializing in psychological profiling, equivocal and wrongful death evaluation, statement and document analysis, expert testimony, corporate fraud, threat assessment, stalking, executive protection, media consulting and investigative services, and customized training seminars. He is a consultant to corporate security and private Investigators, and remains a frequent consultant to local, state and federal law enforcement agencies.