The first show in season 2 where Mannix does not get knocked out, shot, or beaten up. The only violence against Mannix is during the fight at the very end when he is trying to subdue the murderer.
Nancy Kovack was nominated for an Emmy for her performance in this episode.
This marks the first of 22 appearances by Robert Reed as Sgt. Adam Tobias (later promoted to lieutenant), one of three actors with recurring roles as police detectives who enjoyed a friendly relationship with Mannix (the others were Ward Wood as Lt. Art Malcolm (75 eps) and 'Larry Linville as Lt. George Kramer (eight eps)).
The last on-screen acting role of Salli Sachse (Mona). Sixteen movies in four years and this one TV guest role, and she retired from acting, not yet age 23. She is credited with one podcast as herself in 2022.