Voice From Lindsay Clancy's Past Takes Center Stage

Patrick Clancy takes the stand with emotional testimony as jurors weigh the fate of his ex-wife, Lindsay Clancy, who is accused of killing their three young children. His words could become a defining moment in the case as the defense argues Lindsay was suffering from postpartum psychosis, while prosecutors say the deaths were the result of a deliberate plan. Court TV's Vinnie Politan Investigates. MORE