Marguerite Courtot
Role: Marguerite
Edward Roseman
Role: Ferris - a Broker (as E.T. Roseman)
Bradley Barker
Role: Hal Worth [Ch. 5] / Bob Winters [Ch. 6-16]
William Sherwood
Role: Rudolph [Ch. 6]
Julia Hurley
Role: Martha [Ch. 6]
Helen Lindroth
Role: Frances - Marguerite's Maid
Robert Vaughn
Role: Garrett - Leader of the Kidnappers [Ch. 3]
Harry Edwards
Role: (as J. Harry Edwards)
Anna Reader
Role: Martha - one of Durbar's Victims [Ch. 4]
Henry A. Barrows
Role: Bolton - Head of a Band of Crooks [Ch. 8] (as H.E. Barrows)
Richard Purdon
Role: Peter Enright
Edwin Brandt
Role: Dangler - an Adventurer [Ch. 7]
Phil Hardy
Role: Fenton - Ferris' Partner
Frank Holland
Role: Leo - Frances' Husband
F.B. Vernoy
Role: Hal Worth [Ch. 4]
Walter McEwen
Role: Durbar - an Oriental Mystic [Ch. 4]
Otto Niemeyer
Role: Carlow - a Fortune Hunter [Ch. 5]
Freeman Barnes
Role: Morton - Carlow's Accomplice [Ch. 5] /
Stella Jenno
Role: Irene - Bolton's Accomplice [Ch. 8]
A. Lever
Role: Gungha [Ch. 9]
Eleanor Lewis
Role: Alota - Gungha's Accomplice [Ch. 9]
Lois Howell
Role: Bertha - Gungha's Accomplice [Ch. 9]
R.A. Bennett
Role: Kagler - Bob's Assistant [Ch. 10]
Joseph Sullivan
Role: Wharton - a Foreign Agent [Ch. 10]