| Actor | Role |
|---|---|
 Narciso Ibáñez MentaDr. Fredrick Strom | Dr. Fredrick Strom |
 Manuel GalianaEnrique Valdemar | Enrique Valdemar |
| EEstanis GonzálezDr. Chambers | Dr. Chambers |
 José María EscuerDr. Ernest McComb | Dr. Ernest McComb |
 José María CaffarelDr. Harrison Bonell | Dr. Harrison Bonell |
| JJosé AlbertNot listed | Not listed |
| FFernando BaezaNot listed | Not listed |
| FFrancisco SanzNot listed | Not listed |
| JJosé BlanchNot listed | Not listed |
| JJosé Luis SanjuánNot listed | Not listed |
 Inma de SantisLucía van Lain | Lucía van Lain |
 Chicho Ibáñez SerradorAnfitrión | Anfitrión |
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