Nanny Doss looked like a sweet and kind grandmother - but behind her smile hid a serial killer. For nearly three decades, Nannie Doss left a trail of death through small-town America. Among her 11 victims - four husbands and her own children and grandchildren. This episode, Tim and Xanthe take us back in time to unravel the twisted life and crimes of Nannie Doss, whose disturbing confessions earned herself the chilling nickname ‘The Giggling Granny’.

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