The last of four uncredited appearances in the series by Dickey Luck, the others being E7, Diamond S.O.S. (1959), E11 The Angola Brights (1959) and E23 Payment in Advance (1960).
The last of three uncredited appearances in the series by Arthur Goodman, the others being E7, Diamond S.O.S. (1959) and E8 Private View (1959).
The second of two appearances in the series by Trevor Reid, the first being in E10, Air Switch (1959).
The second of two appearances in the series by Dorinda Stevens, the first being in E10, Air Switch (1959).
The second of two appearances in the series by Richard Gale, the first being in E19, Act of Piracy (1960).