The second of six uncredited appearances in the series by Roy Everson, the others being in E5, The Long Weekend (1959), E16 No Flowers for Onno (1959), E24 Checkmate (1960), E31 A Foreign Body (1960) and E39 The Absent Assassin (1960).
The third of four uncredited appearances in the series by John Tatham, the others being E6, You Can't Die Twice (1959), E7 Diamond S.O.S. (1959) and E31 A Foreign Body (1960).
The first of two appearances in the series by Howard Pays, the other being in E31, A Foreign Body (1960).