The filming location for Horn's base of operations is in the same location as the opening episode 'Shadow of the Hawke' both are using 'Vasquez Rocks' in the Sierra Pelona Mountains in northern Los Angeles County, California as the backdrop.
Deborah Pratt (Marella) quit the series after season 2/before season 3 as she was reportedly disgusted with the scripts
Jean Bruce Scott and Katherine Hickland both were born in the same month