Marnie and Noah are investigating a series of assaults. The attacks appear to be random, the targets young and old, men and women, but all were convicted of violent crimes and recently released. They are on the perpetrator's trail when outside events come to the fore. Marnie's parents' house has been targeted by a gang of youths, her tenants attacked in an apparent robbery and Marnie can't help but feel there's a connection to Stephen, her foster brother. Noah's brother Sol is about to fall foul of the gang he pretends not to be involved in. As they investigate they begin to question whether all three cases linked...after all some crimes are quieter and more insidious than killing...