an agent with the Inter-Agency Defense Command (IADC), a CIA / FBI-type organization fighting crime, espionage, and the occasional alien invasion. Strictly speaking, Lynda Carter was the only cast member whose character continued into the second and third seasons (aside from a brief cameo appearance of Major Trevor (Lyle Waggoner) in Diana's flashback when she first encountered his son and a framed photograph of him seen on the younger Trevor's office credenza in season 3). The original Steve Trevor was revealed to have risen to the rank of major general and died in the 35-year interim between the first and second seasons, although Lyle Waggoner remained with the series, portraying Trevor's son, Steve Jr. As a child, Steve Jr. had heard his late father's stories of adventures with Wonder Woman during World War II. It is essentially confirmed in the second season première that his father never introduced him to Wonder Woman and that he had never even seen her photographed. It is similarly implied that he and YN1 Diana Prince were unaware of each other. Diana is taken aback by the younger Steve's existence, implying that his father had never spoken of the boy to either Wonder Woman or YN1 Prince. This was particularly striking when she spoke to Steve Jr. about knowing his father well, from the j-shaped burn scar on his right shoulder, to the 20mm shell casing that he used as a paperweight. Despite (or perhaps because) Wonder Woman had fallen in love with the first Steve Trevor, the producers chose to drop any suggestion that Steve Jr. and Wonder Woman were anything more than good friends. Indeed, when an impostor posing as Steve Jr. attempted to seduce Diana, she made it quite clear that she had no sexual interest in him. Executive producer Douglas S. Cramer noted the difficulties in maintaining long-term romantic tension between leads, because the resolution of that romantic tension often results in the cancellation of the series. Since Waggoner returned in a technically new role, Diana's mother Hippolyta was the only other first season character to be seen or mentioned, though she was played by a new actress, Beatrice Straight, succeeding Carolyn Jones and Cloris Leachman in the role. The post-war fates of General Phil Blankenship, Etta Candy, and Drusilla / Wonder Girl were never revealed. Diana, Steve and Joe Atkinson (Norman Burton), a weathered IADC agent, received their orders from