Crime by Chris McMahon Premium Content  MANDY Smith takes a deep breath amid the tears. She is reliving the worst day of her life almost 36 years ago - and that scream. "I was 15. The phone rang, I answered it. It was my older sister Sharon. She sounded like a young child was asking to speak to mummy. "I asked her 'what's up' and she just said 'I need to speak to mummy now'. She was 17. "I got mum and her scream is something I will never forget. It was a scream of heartache and disbelief and horror. Mum went totally white in the face."