True Boardman
В роли: Jack Hilton - Frances' Assistant [Ch. 3-8, 11]

William H. West
В роли: Various Roles

Пол Херст
В роли: Various Roles

Marin Sais
В роли: Frances Ballon - House Detective [Ch. 1-7, 10] / Various Roles [Ch. 8-9, 11-12]

Thomas G. Lingham
В роли: Various Roles (as Tom Lingham)

Frank Jonasson
В роли: Various Roles

Ollie Kirby
В роли: Various Roles (as Ollie Kirkby)

Charles Cummings
В роли: Jack Hilton - Frances' Assistant [Ch. 1 & 2]

Muriel Ruth
В роли: Celeste le Garde [Ch. 4]