The second of three appearances in the series by David Lander, the others being in E1, The Thirteen Innocents (1959) and E31 A Foreign Body (1960).
The fourth of five uncredited appearances in the series by Johnny Rossi, the others being in E2, The Money Game (1959), E9 Dead on Arrival (1959), E18 The Thousand Mile Alibi (1960) and E39 The Absent Assassin (1960).
The third of four uncredited appearances by Louis Matto, the others being E4, The Two-Headed Monster (1959), E20 Game for Three Hands (1960) and E31 A Foreign Body (1960).
The fourth of six uncredited appearances in the series by Roy Everson, the others being in E5, The Long Weekend (1959), E15 Last Man Lucky (1959), E16 No Flowers for Onno (1959), E31 A Foreign Body (1960) and E39 The Absent Assassin (1960).
The character Artigas would appear again in E33, The Three Keys (1960). However then he would be played by Anthony Jacobs.