Quinnan and Datta follow up reports of a disturbance in a quiet suburban street, and uncover a family who have barricaded themselves in their home. Meanwhile, Beech is trying to hunt down the prime suspect in a number of warehouse robberies, but he has mysteriously disappeared. When Quinnan and Datta attend an attempted robbery in the nearby street, they soon find the clues are piecing themselves together, and both cases soon become entwined.