Theodore J. Cohen, PhD, holds three degrees in the physical sciences from the University of Wisconsin–Madison and has been an engineer and scientist for more than 45 years. He has been an investor for more than 50 years, and most recently has focused on investigating and reporting on corruption in US financial institutions and agencies of the US government. Night Shadows brings back NYPD Homicide Detective Louis Martelli, the hero he introduced in Death by Wall Street: Rampage of the Bulls, and who later reprised his role in House of Cards: Dead Men Tell No Tales and Lilith: Demon of the Night. From December 1961 through early March 1962, Dr. Cohen participated in the 16th Chilean Expedition to the Antarctic. The US Board of Geographic Names in October, 1964, named the geographical feature Cohen Islands, located at 63° 18' S. latitude, 57° 53' W. longitude in the Cape Legoupil area, Antarctica, in his honor. His Antarctic Murders Trilogy describes what happened following a robbery of the Banco Central de Chile in Talcahuano in May, 1960. Dr. Cohen's first novel, Full Circle: A Dream Denied, A Vision Fulfilled, is based on his life as a violinist. He also has authored more than 400 papers, columns, essays, and interviews for the popular, scientific, and technical literature.