Parish and Richards must solve the case of a family murdered at a farm, which appears to be a revenge killing, but revenge for what? And by whom? DC Evie Maddison and a soon to be MI5 agent will be replacing Richards in the Murder Team. Xena and Stick are working on the case of a torso found by building contractors in a hidden cellar room at the old Hailey Green School. DCI Nibley begins recreating his father's research on the Brethren of Hades in the old Armoury but have they planted a man inside the station to watch him? And can he save his wife from an assassin?