This is the second of two appearances Barry Morse makes in the series, each time playing a different character. His first appearance occurs in The King of Champagne (1961). Even though he plays characters on the wrong side of the law in his appearances for this series, he became best known to 1960s TV audiences playing a role on the side right side of the law, if only misguided, when he took on the recurring role of Lt. Philip Gerard in the TV crime drama The Fugitive (1963).