A plea of guilty may be set aside where the accused entered the plea without a proper understanding of what was entailed in terms of acknowledgment of criminal responsibility, and where a well-founded defence of unsoundness of mind was available but not explored due to inadequate legal advice. The availability of a psychiatric defence, combined with the accused's mistaken belief that a guilty plea was merely an admission to doing the acts rather than an admission of criminal guilt, constitutes a miscarriage of justice warranting the quashing of convictions even after sentences have been served.
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