Scott Kolk
Agent Dexter (X-9)
Acting
Jean Rogers
Shara Graustark
Acting
Monte Blue
Baron Michael Karsten
Acting
Henry Brandon
Blackstone
Acting
Lon Chaney Jr.
Maroni
Acting
David Oliver
Pidge
Acting
Larry J. Blake
Chief FBI Agent Wheeler (as Larry Blake)
Acting
Henry Hunter
FBI Agent Tommy Dawson (C-5)
Acting
George Shelley
Henchman Packard
Acting
Si Jenks
'Jolly Roger' Ticket Barker [Chs. 1, 4, 7-9]
Acting
Lynn Gilbert
Rosel [Chs. 2, 6-7, 12]
Acting