When the series shifted to Los Angeles, Janet Gunn permanently assumed the role of the female member of "The Night Watchmen", Kelly Cochrane.
Gunn later starred for three seasons as Cassandra St. John in Silk Stalkings, another Crimetime After Primetime drama, after it had moved exclusively to the USA Network.
Nicholas Marshall, a former police officer and district attorney, is a judge who loses his faith in the legal system after his wife and daughter are murdered in a car bombing intended for him.
Marshall had already had his faith in the legal system shaken even before his wife and his daughter were murdered: as a youth, growing up in an unnamed ghetto in an unspecified city, his father was murdered by a hoodlum with local connections; as a police officer, technicalities often voided his arrests; as a prosecutor, having obtained his law degree through night school studies, crooked defenders would sometimes undermine his prosecutions; and after his election to a judgeship, the letter of the law often bound his hands.
The members of the watchmen were Arnold "Moon" Willis (Dick O'Neill), who had once been a con man; Jericho "Gibs" Gibson (Clayton Prince), a special effects expert; and a female companion that changed several times during the three seasons.