Father's Day 1984: seven people die in a blaze of gunfire on a sunny afternoon in a hotel car park. Among the dead, a 15 year old girl caught in the crossfire when two heavily-armed bikie gangs, the Comancheros and the Bandidos, clash. Brothers in Arms tells the extraordinary story of this murderous outbreak, from its vicious beginnings in the closed world of Sydney's motorcycle gangs to its inevitable end in death and imprisonment. The Milpera Massacre has become a grisly part of Australian folklore, and the extraordinary range of characters involved in this horrifying clash are brought to life thanks to the skilled work of these two outstanding investigative journalists.