Lester Holt on Luigi Mangione. Divorce attorney on trial for client's murder. Plus, ankle monitors.

Dateline anchor Lester Holt shares his new reporting on the case of Luigi Mangione, the man accused of fatally shooting UnitedHealthcare CEO Brian Thompson. In Cleveland, 13 years after a mother was stabbed to death, her divorce attorney is on trial for her murder. In Dateline Round Up, updates from the trial of Larry Millete, a San Diego man accused of buying magic spells, then murdering his wife. Plus, an expert on ankle monitors answers the question: How useful are they, really?