What was all that about? Did Mary Malcolm actually believe Liz Stride to be her estranged sister? Was she mentally unwell or simply looking for five minutes of fame? If Liz Stride had been impersonating Elizabeth Watts to swindle money from her, why did Mary Malcolm fail to recognise her own sister? Or does that bring us back to the original point about Mary Malcolm not being 'all there'?
Explanation, please.
Explanation, please.
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