Can Lindsay Clancy's Ex Save Her from a Guilty Verdict?

Patrick Clancy took the stand in his ex-wife Lindsay Clancy's murder trial, where jurors must decide whether she is criminally responsible for the deaths of their three young children. His emotional testimony could play a pivotal role as the defense argues Lindsay was suffering from postpartum psychosis, while prosecutors insist she committed calculated murder. Court TV's Vinnie Politan Investigates. MORE