The second of two uncredited appearances in the series by Jack Silk, the first being in E8, Private View (1959).
The second of four uncredited appearances in the series by Bob Raymond, the others being E9, Dead on Arrival (1959), E25 Fingers of Guilt (1960) and E37 Desert Hi-Jack (1960).
The second of two uncredited appearances in the series by Jack Dearlove, the first being in E12, The Chinese Mask (1959).
The first of three appearances in the series by Richard Leech, the others being E21, The Collector (1960) and E38 Pipeline (1960).