Special Agent Tom Colby / SAC Kendall Lisbon
Lewis Erskine
Arthur Ward
Narrator (uncredited)
Agente especial Chris Daniels
Agente especial Jim Rhodes
Barbara Erskine
SAC Chet Randolph / Agent Wright
SAC Bryan Durant / Alvin Forest
Hair and Fibers Expert / SA Ed Spanger
Howard Deal / Van Doyle
Glenn Orland / Agent Roy McAdams
Clenard Massey / Casey
Carl Pike / Workman
Hammond / Maury Maddock
SAC Allen Bennett / R. A. Dale Cameron
Victor Quinlan / SRA Arnold Kaplan
Martin Eldon / Vincent Millard
Logan Dupree / Frank Rim
SAC Gary Morgan / Clayton McGregor
Howard Rademaker / John Elgin
Purser / Dick Amazeen
Alex Ramsey / Christian Palmer
Ira Barker / Allen Clarke
