A Promise to Helene (S29E09)
S29E09
The murder of college student Helene Pruszynski goes unsolved for almost four decades. However, a breakthrough occurs when a new detective employs a groundbreaking technique to uncover the truth behind her death. Josh Mankiewicz investigates the long-standing mystery that finally edges closer to resolution.
Show
Dateline
Episode
S29E09
Air Date
Oct 16, 2020