Husband testifies about affair with au pair. Alleged killer of UGA student on trial. Plus, no body murders.

In Virginia, Brendan Banfield, the man accused of murdering his wife and a complete stranger, says the prosecution's theory is "absolutely crazy." In Georgia, law student Tara Baker's murder went unsolved for two decades, until the family teamed up with a podcaster to try and solve her murder. Her alleged killer is now heading to trial. Updates in the case of Utah mom, Kouri Richins, and the trial of the New Jersey businessman accused of a quadruple murder. Plus, what clues to look for when investigating a murder without a body Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com