Family therapist Kate Sinclair repairs other people's troubled lives, all the while reveling in her stable marriage and handsome home. But there are demons in her past that will not stay buried forever, and the carefully constructed edifice of her life comes tumbling down when her half-sister JoLynn announces her plans to marry Colin Friendly, a man on trial for the brutal murders of thirteen Palm Beach women. Kate soon finds herself embroiled in a desperate struggle to protect her family from Colin's increasingly sinister advances. To make matters worse, her aging mother is losing her tenuous grip on reality and her rebellious daughter Sara is falling under JoLynn's wayward influence - a development that would worry Kate in the best of times, but which in this case might well prove deadly. As the strain begins to tear Kate's marriage apart, into the fray comes the smooth-talking Robert, her high-school crush, who soon displays an unhealthy interest in the results of Colin Friendly's trial.