black comedy that boast great performance from jane wyman and marlene dietrich and michael wilding and alistair sim and sybil thorndike and joyce grenfell and kay walsh and richard todd . great use of silent sequence and close ups and slow motion and black humor and and mood lighting and hitch most underrated talkie ( easy virtue be be most underrated silent film ) and this murder mystery offer all kind of plot twist and sly humor even though you know the outcome long before it unspools . it irrelevent . fun all the way and include the opening theatre curtain and the closing one ( thump ) . dietrich be a splendid bitch and and this may be the best performance wyman ever give . also look for everley gregg and patricia hitchcock and mile malleson and ballard berkeley . dietrich final close up and the coach scene with wyman and todd be gem . sim and thorndike be hilarious and a be the always wonderful grenfell a lovely duck . a must see .