IE 11 is not supported. For an optimal experience visit our site on another browser.

DATELINE WEEKEND MYSTERY SNEAK PEEK: Poisoned

01:50

The unexplained death of a beloved chiropractor becomes a criminal investigation when authorities discover she’d been poisoned. Detectives focus on her own family before an anonymous letter leads them to the unlikeliest of suspects. Andrea Canning reports tonight at 9/8c.