Daniel as a baby with his mother Patricia Credit: family photo
Twenty-five-year-old year old Patricia Grainger was found stabbed, strangled and sexually assaulted. Daniel runs a website dedicated to finding her killer or killers - he says the whole family needs to know what happened before they can move on.
Seventeen years on son asks: "Who killed my Mum?" http://t.co/shdUnPHh13
— WhoKilledMyMum (@WhoKilledMyMum) August 11, 2014