julia ross ( nina foch ) agree to take a position a a secretary with the rich hughes family to get over her boyfriend leave her . almost immediately she be drug and ship off to the family estate in cornwall . when she awaken they keep tell her she marion hughes and have be mentally ill and keep her lock up . but why . you will probably guess why but would not mind because this one be fun . along with the narrow margin and face behind the mask this be one of the best b picture ever make . ( b picture be low budget picture make quickly with low budget and no major star ) . it just as long a it need to be ( only 65 minute ) and be well direct and fast paced and excite . it only stumble at the end which i find a bit too implausible to buy . foch ( a good actress ) be just ok in the lead but dame may witty be great and george macready be excellent ( and frighten ) a the villain . well worth catch . a perfect example of how you can make a great movie on a small budget .