The second of two appearances in the series by Francis De Wolff, the first being in E5, The Long Weekend (1959).
The last of three appearances in the series by Lisa Daniely, the others being E7, Diamond S.O.S. (1959), and E14 The Man's a Clown (1959) in which she played the character Helene both times.
The second of two appearances in the series by Harold Kasket, the first being in E13, Slave Ship (1959).
The second of two appearances in the series by Stanley Van Beers, the first being in E26, The Girl with Grey Hair (1960).