I thought I'll gather together all reviews for the play which mention Anna's part as Isabella. (To see the full reviews you can click on the bold links) The Stage wrote In the hands of the compellingly mercurial Anna Maxwell Martin - in her first major Shakespeare role - Isabella’s passionate, erotically charged arguments and outbursts of anger are punctuated with quiet moments of girlish nervousness. Gradually Maxwell Martin develops poise for Isabella, culminating in the withering gaze of incredulity with which she answers Vincentio’s clumsy proposal in Shakespeare’s rather tortuous denouement.