Arrest in UnitedHealthcare CEO murder. Drama at a Georgia sentencing. And Josh Mankiewicz on "Deadly Mirage."

Dateline: True Crime Weekly - A podcast by NBC News - Thursdays

The alleged shooter of healthcare exec is in custody. At her sentencing, a Georgia grandmother convicted of murder points the finger at her own son. And Josh Mankiewicz stops by to talk about his latest podcast, "Deadly Mirage."