What do parents do when a child is overly aggressive or out of control and they don't know what to do? In part three of When Nothing Else Works, Mary Richards introduces us to PCIT or Parent-Child Interaction Therapy. This is a research based therapy offered at several places in Utah, and it is helping many families to survive and even thrive. Dr. Brooks Keeshin explains what it is all about, and we meet a mother who tells us how it lead to a breakthrough for her child.