In the early 1980s, a war was raging in Glasgow's streets. Rival ice-cream van owners were struggling for control of the most lucrative 'runs'. It was a war which saw vans being shadowed, drivers harassed and customers terrorised. Eventually, there was an explosion of violence, with masked men looming out of the darkness wielding clubs, knives and even shotguns. That violence seemingly climaxed in horrific murder, with six innocent members of one family dying in an arson attack on their home.