Thirteenth and final appearance of Virginia Gregg in Dragnet 1967 (1967). She also appeared in ten episodes of Dragnet (1951) the movie Dragnet (1954) and the television movie Dragnet 1966 (1969).
William Boyett, who played Detective Ed Lovold in this episode, was appearing regularly at the same time(as Sgt. MacDonald) in another series produced by Jack Webb, the popular "Adam-12". In this "Dragnet" episode, Boyett wore glasses, possibly to distinguish between the two characters he played as he was already recognized by this time from appearing on "Adam-12". It's interesting that Webb used Boyett in this episode as a different character when he was already a regular on the other series. In both versions of "Dragnet", the series from the '50's and this one, Boyett appeared in several episodes, but it was before he was cast in "Adam-12".
William Boyett had appeared several times in Dragnet as different characters, usually police officers & often as Detectives. At the time of this showing, he was appearing in Adam-12 (1968) as Sgt. MacDonald. In fact, in his previous appearance on Dragnet, before his role in this episode, he played the role of Sgt. "Mac" MacDonald in the first episode of this season. 4.1; "Personnel:The Shooting", as a "crossover" appearance.
The Captain in the episode is identified as Green. Though he is seen speaking to Friday and Gannon at the beginning, there are no audible lines heard from him and he is uncredited in the cast. A Patrolman is on the scene of the burglary that Gannon and Friday arrive to and they introduce themselves. When the Patrolman introduces himself, he simply states his last name, "Edwards..", yet in the credits he is identified with a first name, "Charles Edwards." This is unusual because Patrolmen are usually identified in the credits as, "Officer" with their name to follow. Also, Edwards never states his first name. When Friday is speaking to the cab driver, by radio, at the dispatch office, the cab driver's last name is given and he has several spoken lines but is also uncredited at the end of the episode, presumably because the actor portraying him is unseen in the segment.