This is the fourth and final appearance Ned Glass makes in the series, playing, as he does each time, a different role from each of the other three appearances.
This is the fourth of five appearances Michael Constantine makes in the series, each time appearing as a different character.
Given an uncredited bit part as a dock worker in this show, Charlie Picerni is perhaps better known in the industry for his work as a stunt coordinator/director, as well as performing stunts and acting as stunt doubles for other actors. His work in Die Hard (1988) and the franchise that followed made him a star in the field of movie stunts. The actor who plays Lee Hobson in The Untouchables (1959) is in real life his brother.
This is the only appearance Barbara Barrie makes in this series, playing the role of the character Cheryl Hines. Of note, the actress Cheryl Hines, born three years after the original broadcast of this episode, appears with Ms. Barrie in two episodes of the late '90s TV sitcom Suddenly Susan (1996), starring Brooke Shields in the title role. Ms. Barrie' role, that of the title character's grandmother, is recurring; Ms. Hines' role is different both of the times she appears.