Aktor:
H.W. Kerr
(as Dr H.W. [Bill] Kerr)
Aktor:
Glen Ingram
(as Dr Glen Ingram)
Aktor:
Bill Freeland
(as Dr Bill Freeland)
Aktor:
Bob Endean
(as Dr Bob Endean)
Aktor:
Mike Archer
(as Dr. Michael Archer)