Showdown in mom's murder trial. Verdict in Microsoft employee murder. Plus, what is postpartum psychosis?

In Massachusetts, Lindsay Clancy's defense attorney grills final prosecution witnesses after they testify that she knew right from wrong when she killed her children. In Florida, a verdict has been reached in the trial of Mario Fernandez Saldana, a man accused of arranging the fatal shooting of his wife's ex-husband, Microsoft employee Jared Bridegan. In Dateline Round Up, the trial is underway for Duane "Keefe D" Davis, accused of orchestrating the 1996 shooting that killed rap legend Tupac Shakur. Donna Adelson, the Florida grandmother convicted of murdering her former son-in-law FSU law professor, Dan Markel, is asking for a new trial. Plus, a psychiatrist breaks down postpartum psychosis. This episode discusses suicide.