Casts
Derek Bond
as Saturday Keith
Rona Anderson
as Joanna Benbow
James Robertson Justice
as Prof. Benbow
John McLaren
as Elmer Van Buren
Barbara Murray
as Nelly Bly
Leslie Dwyer
as Holly
Joyce Grenfell
as Miss Horsefell-Hughes
Fabia Drake
as Lady Mercy Cotton
Maurice Denham
as PC Windle
Andrew Osborn
as Williams
