Medvirkende i Under Proof

Betty StockfeldVivian

Tyrell DavisDudley

Judy KellyCorone

Guy MiddletonBruce

Charles FarrellSpike

Viola ComptonMrs. Richards

David HorneDr. Walton

Edward AshleyWard Delaney

Henry B. LonghurstInspector Holt

Andreas Malandrinoscast

Peter Poppcast

Harry Watsoncast

Roland GillettRegissør / Manusforfatter / Produsent

E. Lewis WallerManusforfatter

John FindlayProdusent

Stanley GrantCinematographer

Charles CowlrickComposer