Investigation Discovery’s new series Toxic, which examines the devastating impact of destructive relationships, continues with its third episode, “The Depraved Heart,” airing Monday, May 19, 2025, at 10:00 PM ET. The installment features Elizabeth Chambers investigating a case where a routine dental visit allegedly led to a fatal outcome.
Chambers meets with the Harris family, who are seeking justice for their daughter, Sarah. The narrative details how Sarah’s interaction with an oral surgeon purportedly developed into a dangerous and manipulative relationship. The episode will explore allegations that the surgeon leveraged his professional position to control Sarah, allegedly leading to her addiction to surgical drugs and, ultimately, her death. This case fits the series’ pattern of exploring raw and real stories from individuals affected by unhealthy and harmful relationship dynamics.
Toxic positions Chambers, with her background as an investigative journalist, as a guide through these complex and often harrowing accounts. The series aims to shed light on the lasting trauma associated with such relationships, and in this specific episode, Chambers supports the Harris family’s pursuit of accountability.
