Series creator Leonard Stern was in real life married to Gloria Stroock who played Commissioner McMillan's secretary Maggie in seven episodes, this being her penultimate one, that marriage lasting from 1957 until Stern's passing in 2011, but this episode also features as a guest star Stern's first wife from the early fifties, Julie Adams, this being her only shared credit with either Stern or Stroock. Adams during much of the Sterns' marriage had herself been married from 1955 to 1978 to her second husband, actor Ray Danton, who never did a "McMillan" series appearance, but did two guest episodes of another of the "NBC Mystery Movie" series, McCloud (1970).