Meet Pam Hupp, Betsy Faria's close friend and the last person to see Betsy alive after dropping her off at home on the night of her murder. Betsy's husband makes a distraught call to 9-1-1.

Pam becomes a source of support not just for Betsy’s family, but for law enforcement and District Attorney Leah Askey as they build their case. Russ hires Joel Schwartz, a top criminal defense attorney from St. Louis.

Pam starts to lose control as Russ' new trial looms ahead, she's facing money troubles and a relentless "Dateline" producer, and difficulty caring for her sick mother. D.A. Leah Askey realizes Pam may not be the star witness she thought.